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- Journal Article
- A1
- open access
Digital PCR partition classification
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- Journal Article
- A1
- open access
Increasing confidence in a phosphatidylethanol 16:0/18:1 cutoff at 20 ng/mL to support abstinence or minor intake of alcohol
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- Journal Article
- A1
- open access
The dangers of using Cq to quantify nucleic acid in biological samples : a lesson from COVID-19
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Machine learning to assist in large-scale, activity-based synthetic cannabinoid receptor agonist screening of serum samples
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Optimizing available tools for achieving result standardization : value added by joint committee on traceability in laboratory medicine (JCTLM)
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Digital polymerase chain reaction for assessment of mutant mitochondrial carry-over after nuclear transfer for in vitro fertilization
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The dynamic and multifaceted nature of cardiovascular disease and using genetic testing to inform clinical care : an international perspective
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- Miscellaneous
- open access
Cautionary note on contamination of reagents used for molecular detection of SARS-CoV-2
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- Journal Article
- A1
- open access
The digital MIQE guidelines update : minimum information for publication of quantitative digital PCR experiments for 2020
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Hide and seek : overcoming the masking effect of opioid antagonists in activity-based screening tests
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Effects of gender-affirming hormones on lipid, metabolic, and cardiac surrogate blood markers in transgender persons
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Validation of activity-based screening for synthetic cannabinoid receptor agonists in a large set of serum samples
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Quantifying atherogenic lipoproteins : current and future challenges in the era of personalized medicine and very low concentrations of LDL cholesterol : a consensus statement from EAS and EFLM
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Activity-based concept to screen biological matrices for opiates and (synthetic) opioids
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Activity-based detection of cannabinoids in serum and plasma samples
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- Journal Article
- A1
- open access
Harmonization of serum thyroid-stimulating hormone measurements paves the way for the adoption of a more uniform reference interval
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- Journal Article
- A1
- open access
Standardization of free thyroxine measurements allows the adoption of a more uniform reference interval
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Fasting is not routinely required for determination of a lipid profile : clinical and laboratory implications including flagging at desirable concentration cutpoints : a joint consensus statement from the European Atherosclerosis Society and European Federation of Clinical Chemistry and Laboratory Medicine
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Application of the characteristic function to evaluate and compare analytical variability in an external quality assessment scheme for serum ethanol
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Evaluation of normalization strategies used in real-time quantitative PCR experiments in HepaRG cell line studies
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Measurements for 8 common analytes in native sera identify inadequate standardization among 6 routine laboratory assays
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Comparison of mRNA splicing assay protocols across multiple laboratories: recommendations for best practice in standardized clinical testing
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Quantification of integrated HIV DNA by repetitive-sampling Alu-HIV PCR on the basis of Poisson statistics
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Prostate proteins glycosylation profile and its potential as a diagnostic biomarker for prostate cancer
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The digital MIQE guidelines : minimum information for publication of quantitative digital PCR experiments
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Cobalt and chromium measurement in patients with metal hip prostheses
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Immunonephelometric carbohydrate-deficient transferrin results and transferrin variants
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- Journal Article
- A1
- open access
Single-nucleotide polymorphisms and other mismatches reduce performance of quantitative PCR assays
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Isotopic abundance yields bias in the assessment of testosterone in a new reference method procedure : reply
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Isotope-dilution liquid chromatography-tandem mass spectrometry candidate reference method for total testosterone in human serum
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More reliable on-site detection of cannabis in oral fluid
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Fatal electrolyte abnormalities following enema administration: commentary
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Calcium, magnesium, albumin, and total-protein measurement in serum as assessed with 20 fresh-frozen single-donation sera
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An appeal to medical journal editors : the need for a full description of laboratory methods and specimen handling in clinical study reports
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Primer sequence disclosure : a clarification of the MIQE guidelines
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Candidate reference measurement procedures for serum 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 by using isotope-dilution liquid chromatography–tandem mass spectrometry
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Roadmap for harmonization of clinical laboratory measurement procedures
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Long-term stability of clinical laboratory data: sodium as benchmark
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Oral fluid testing : promises and pitfalls
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Challenges in the diagnosis of the antiphospholipid syndrome
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Diagnostic Value of the Hemopexin N-Glycan Profile in Hepatocellular Carcinoma Patients
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Report of the IFCC working group for standardization of thyroid function tests: part 1: thyroid-stimulating hormone
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Report of the IFCC working group for standardization of thyroid function tests: part 3: total thyroxine and total triiodothyronine
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Report of the IFCC working group for standardization of thyroid function tests: part 2: free thyroxine and free triiodothyronine
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Traceability in laboratory medicine
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Toward standardization of insulin immunoassays
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Glomerular filtration rate is a confounder for the measurement of soluble mesothelin in serum
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Urinary β-Trace Protein as a New Renal Tubular Marker
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The MIQE Guidelines: Minimum Information for Publication of Quantitative Real-Time PCR Experiments
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uPA+/+-SCID mouse with humanized liver as a model for in vivo metabolism of exogenous steroids: methandienone as a case study
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A major step forward in the routine measurement of serum free thyroid hormones
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Macromolecular cystatin C can be a caveat for estimating glomerular filtration rate in biliary obstruction
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Calculation of measurement uncertainty - Why bias should be treated separately
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Unusual serum electrophoresis pattern in a woman with pancreatic carcinoma
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State-of-the-art of serum testosterone measurement by isotope dilution-liquid chromatography-tandem mass spectrometry
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Comparison of a routine LC-MS/MS assay for testosterone against an isotope dilution GCMS reference method
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Variation in HDL cholesterol methodology and calibration may lead to erroneous cardiovascular risk estimation
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Mulitcenter performance evaluation of the Roche phenobarbital ONLINE TDM assay on Hitachi and cobas (R) systems
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- Journal Article
- A1
- open access
Rapid and sensitive detection of BRCA1/2 mutations in a diagnostic setting: Comparison of two high-resolution melting platforms
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Development and multicenter evaluation of the N Latex CDT direct immunonephelometric assay for serum carbohydrate-deficient transferrin
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Perchloric acid treatment to stabilize uric acid concentrations in blood samples of patients receiving uric acid oxidase (rasburicase) therapy
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Vitamin C deficiency and scurvy are not only a dietary problem but are codetermined by the haptoglobin polymorphism
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- Journal Article
- A1
- open access
Pilot study for the Standardization of insulin immunoassays with isotope dilution-liquid chromatography/tandem mass spectrometry
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Lipoprotein lipase mRNA expression in whole blood is a prognostic marker in B cell chronic lymphocytic leukemia
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Feasibility of standardization of serum C-peptide immunoassays with isotope-dilution liquid chromatography-tandem mass spectrometry
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Use of frozen sera for FT4 standardization: Investigation by equilibrium dialysis combined with isotope dilution-mass spectrometry and immunoassay
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Potential application of ELAVL4 real-time quantitative reverse transcription-PCR for detection of disseminated neuroblastoma cells
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Feasibility study of the use of frozen human sera in split-sample comparison of immunoassays with candidate reference measurement procedures for total thyroxine and total triiodothyronine measurements
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Calculation of measurement uncertainty in clinical chemistry
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Diagnostic performance and predictive value of rheumatoid factor, anti-citrullinated peptide antibodies, and the HLA shared epitope for diagnosis of rheumatoid arthritis
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Serum free hemoglobin concentrations in healthy individuals are related to haptoglobin type
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Metrologic traceability of total thyroxine measurements in human serum: Efforts to establish a network of reference measurement laboratories
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Chewing-GUM - Can it make measurement uncertainty digestable?
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Increased selenium concentrations in seronorm trace elements serum
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Interassay and interobserver variability in the detection of anti-neutrophil cytoplasmic antibodies in patients with ulcerative colitis
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Phenytoin measured by kinetic interaction of microparticles in solution (KIMS) homogeneous immunoassay: Multisite evaluation of the Roche OnLine (R) TDM method
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Clinical chemistry in Rwanda
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Multicenter evaluation of the new Roche Carbamazepine OnLine (R) TDM assay developed for use on Roche Diagnostics/Hitachi analyzer systems
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Comparison of five different citrated tubes and their in vitro effects on platelet activation
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- Journal Article
- A1
- open access
Evaluation of a candidate reference measurement procedure for serum free testosterone based on ultrafiltration and isotope dilution-gas chromatography-mass spectrometry
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- Conference Paper
- C3
- open access
Evaluation of a candidate reference measurement procedure for serum free testosterone based on ultrafiltration and isotope dilution-gas chromatography-mass spectrometry
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- Conference Paper
- C3
- open access
Application of an isotope dilution-gas chromatography-mass spectrometry measurement procedure for the evaluation of 5 routine assays for serum free testosterone (FTe)
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IFCC reference system for measurement of hemoglobin A(lc) in human blood and the National Standardization Schemes in the United States, Japan, and Sweden: A method-comparison study
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Interpreting method comparison studies by use of the Bland-Altman plot: Reflecting the importance of sample size by incorporating confidence limits and predefined error limits in the graphic
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Standardization of C-peptide measurements in urine by method comparison with isotope-dilution mass spectrometry
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Reevaluation of formulas for predicting creatinine clearance in adults and children, using compensated creatinine methods
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Haptoglobin polymorphisim and iron hemostasis
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Toxicity of free p-Cresol: A prospective and cross-sectional analysis
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Exercise-induced myocardial ischemia is accompanied by increased serum creatine concentrations
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Enzymatic hydrolysis improves the sensitivity of emit screening for urinary benzodiazepines
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Caveats in carbohydrate-deficient transferrin determination - Response.
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Quantitative evaluation of urinalysis test strips.
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Detection of specific antinuclear reactivities in patients with negative anti-nuclear antibody immunofluorescence screening tests.
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Application of the Bland-Altman plot for interpretation of method-comparison studies: A critical investigation of its practice.
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Quantitative determination of vapor-phase compound A in sevoflurane anesthesia using gas chromatography-mass spectrometry
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Heparin-induced release of protein-bound solutes during hemodialysis is an in vitro artifact.
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Automated flow cytometric analysis of cerebrospinal fluid.
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Fast determination of carbohydrate deficient transferrin using capillary zone electrophoresis.
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Quantification of glycohemoglobin in blood by mass spectrometry applying multiple-reaction monitoring
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Determination of the designer drugs 3,4-methylenedioxymethamphetamine, 3,4-methylenedioxyethylamphetamine, and 3,4-methylenedioxyamphetamine with HPLC and fluorescence detection in whole blood, serum, vitreous humor, and urine
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The haptoglobin 2-2 phenotype affects serum markers of iron status in healthy males.
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Prolonged hyperlipasemia attributable to a novel type of macrolipase.
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Transferrin polymorphism influences iron status in blacks.
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Reference values of serum IgA subclasses in Caucasian adults by immunonephelometry.
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Reliability of measurement of ionized magnesium in ultrafiltrate.
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Falsely increased urinary caffeine attributable to contamination by urine test strips.
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Automated flow cytometry compared with an automated dipstick reader for urinalysis.
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Serum complexed magnesium - A cautionary note on its estimation and its relevance for standardizing serum ionized magnesium.
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Efforts by industry toward standardization of serum estradiol-17β measurements
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Serum creatine kinase activity is not a reliable marker for muscle damage in conditions associated with low extracellular glutathione concentration
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Study of arsenic-protein binding in serum of patients on continuous ambulatory peritoneal dialysis
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Intrinsic and routine quality of serum total potassium measurement as investigated by split sample measurement with an ion chromatography candidate reference method.
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Validity of linear regression in method comparison studies: is it limited by the statistical model or the quality of the analytical input data?
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Quantitative colorimetric determination of urinary p-aminophenol with an automated analyzer
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Absence of serum alanine aminotransferase activity in a neonate
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Speciation of arsenic in serum, urine, and dialysate of patients on continuous ambulatory peritoneal dialysis
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Multicenter evaluation of a homogeneous assay for HDL-cholesterol without sample pretreatment.
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Graphical interpretation of analytical data from comparison of a field method with a Reference Method by use of difference plots.
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Absence of serum alanine aminotransferase activity in a neonate.
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Difference in hemoglobin-binding ability of polymers among haptoglobin phenotypes - Response.
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Four frequently used test systems for serum cholesterol evaluated by isotope dilution gas chromatography-mass spectrometry candidate reference method
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Accuracy-based assessment of proficiency testing results with serum from single donations : possibilities and limitations
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Reference values for immunoglobulin A are determined by haptoglobin polymorphism
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Accumulation of arsenic species in serum of patients with chronic renal disease
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Logical observation identifier names and codes (LOINC) database: a public use set of codes and names for electronic reporting of clinical laboratory test results
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Presentation of receiver-operating characteristic (ROC) plots
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Meeting report: First and second estradiol international workshops.
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Interference of soluble TNF-alpha receptors in immunological detection of tumor necrosis factor-alpha.
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Biological and clinical significance of haptoglobin polymorphism in humans.
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Relation between serum IgA concentration and haptoglobin type.
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3 ROUTINE METHODS FOR SERUM CORTISOL EVALUATED BY COMPARISON WITH AN ISOTOPE-DILUTION GAS-CHROMATOGRAPHY MASS-SPECTROMETRY METHOD.
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FLOW-CYTOMETRY TO OVERCOME INTERFERENCES IN IMPEDANCE-BASED LEUKOCYTE COUNTING.
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Characteristics of creatine release during acute myocardial-infarction, unstable angina and cardiac-surgery.
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Kodak Ektachem theophylline assay
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Three routine methods for serum cortisol evaluated by comparison with an isotope dilution gas chromatography-mass spectrometry method
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Candidate reference method for determining serum creatinine by isocratic HPLC : validation with isotope dilution gas chromatography-mass spectrometry and application for accuracy assessment of routine test kits
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Simultaneous determination of endogenous retinoic acid isomers and retinol in human plasma by isocratic normal-phase HPLC with ultraviolet detection
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In vivo effects of granulocyte enzymes on creatine kinase activity
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COLORIMETRIC QUANTIFICATION OF URINARY IRON DURING DEFEROXAMINE THERAPY.
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Determination of Serum Glucose-Concentration by a Candidate Definitive Method - Reply.
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IN-VIVO EFFECTS OF NEUTROPHIL ENZYMES ON CARDIAC ENZYMES.
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Candidate reference method for determining serum theophylline applied to target-setting in external quality assessment and routine method evaluation
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Solid-phase extraction technique for gas-chromatographic profiling of acylcarnitines
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Candidate reference methods for determining target values for cholesterol, creatinine, uric acid, and glucose in external quality assessment and internal accuracy control : II. Method transfer
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Acquired Hypolipoproteinemia.
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Method-dependent differences in apparent sodium concentrations in plasma after exchange transfusions with citrated blood
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A novel type of acquired form of hypolipoproteinemia
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PLASMA LIPOPROTEIN(A) VALUES AND SEVERITY OF CORONARY-ARTERY DISEASE IN A LARGE POPULATION OF PATIENTS UNDERGOING CORONARY ANGIOGRAPHY.
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Direct enzyme-immunoassay for estradiol in serum of women enrolled in an in vitro fertilization and embryo transfer program.
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ASSESSMENT OF UREA AND OTHER UREMIC MARKERS FOR QUANTIFICATION OF DIALYSIS EFFICACY.
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Clostebol Positive Urine alter Consumption of Contaminated Meat.
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DIRECT DETERMINATION OF ZINC IN SERUM BY ZEEMAN ATOMIC-ABSORPTION SPECTROMETRY WITH A GRAPHITE-FURNACE.
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Enzymatic sample hydrolysis and HPLC in a study of phylloquinone concentration in human milk
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Development, validation, and certification by isotope dilution gas chromatography-mass spectrometry of lyophilized human serum reference materials for cortisol (CRM 192 and 193) and progesterone (CRM 347 and 348)
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Mass concentration measurement of creatine-kinase BB in cerebrospinal fluid as a parameter for evaluating brain lesion size
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Estimation of brain lesion size based on quantifying CK-BB release
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ENZYME-LINKED IMMUNOSORBENT-ASSAY FOR CHROMOGRANIN-A
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Serum phylloquinone concentrations in a normal population of children as compared with the reference interval in adults
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Simultaneous determination of pentoxifylline and three metabolites in biological fluids by liquid chromatography
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Estradiol-17-beta quantified in serum by isotope dilution-gas chromatography mass-spectrometry : reversed-phase C18 high-performance liquid chromatography compared with immuno-affinity chromatography for sample pretreatment
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Solid-phase extraction with strong anion-exchange columns for selective isolation and concentration of urinary organic acids
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Chicken egg yolk and rabbit serum compared as sources of antibody for radioimmunoassay of 1,25-dihydroxyvitamin D in serum or plasma
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Influence of blood-collecting systems on concentrations of tumor necrosis factor in serum and plasma
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A MODIFIED STATISTICAL-METHOD FOR THE DETECTION OF OUTLYING VALUES IN EXTERNAL QUALITY-CONTROL - COMPARISON WITH OTHER TECHNIQUES
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Liquid-chromatographic measurement of riboflavin in serum and urine with isoriboflavin as internal standard
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Radioimmunoassay for 1,25-dihydroxyvitamin D in serum or plasma
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Development and evaluation of a radioimmunoassay for Arg8-vasopressin, after extraction with Sep-Pak C18
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Early diagnosis of acute myocardial infarction by enzymatic urinary creatine determination
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Use of monoclonal antibodies to detect human placental alkaline phosphatase
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STATISTICAL-METHOD COMPARISON APPROACH FROM EXTERNAL QUALITY-CONTROL DATA
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Nonaqueous reversed-phase liquid chromatography and fluorimetry compared for determination of retinol in serum
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An 'extra' arylamidase isoenzyme band in the serum of a cancer patient
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Measurement of alpha-tocopherol, beta-tocopherol and gamma-tocopherol in serum by liquid chromatography
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Measurement of alpha-, beta-, and gamma tocopherol in serum by liquid chromatography
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Simultaneous determination of retinol and retinyl esters in serum or plasma by reversed-phase high-performance liquid chromatography
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Determination of serum alpha-tocopherol (vitamin E) by high-performance liquid chromatography
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Determination of serum retinol (vitamin A) by high-speed liquid chromatography