Abstract:
BACKGROUND:The Clinical Pharmacology Quality Assurance (CPQA) program provides semiannual proficiency testing (PT) of antiretroviral analytes for 11 US and international clinical pharmacology laboratories (CPLs) to ensure interlaboratory comparability. In this article, we provide estimates of the main sources of variability and assess the accuracy of the algorithm for the assessment of performance. METHODS:Descriptive statistics are reported from 13 PT rounds from 2010 to 2016. Eight of the most common antiretroviral analytes were examined. Variance components analysis was used to rank the relative contributions of CPLs, antiretroviral analyte, and concentration category (low, medium, and high) to bias and variability using mixed models. Binary classification metrics of the PT assessment algorithm are calculated in comparison with a model using 95% prediction limits around estimated regression equations. RESULTS:CPLs provided 4109 reported concentrations of 65 unique samples for each of the 8 antiretroviral analytes across 13 PT rounds. Individual CPL accounted for the greatest amount of total variability (4.4%). Individual CPL and analyte combination (interaction) accounted for the greatest amount of bias (8.1%). Analyte alone accounted for 0.5% or less for total variability and bias. Overall, using a ±20% acceptance window around the final target, 97% of individual reported concentrations were scored acceptable, and 96% of antiretroviral/round scores were deemed satisfactory. Comparison with the regression model gave 100% sensitivity but only 34.47% specificity. Narrowing the acceptance window to ±15% improved specificity to 84.47% while maintaining a 99.17% sensitivity. CONCLUSIONS:The current CPQA PT scoring algorithm that use a ±20% acceptance window seems to suffer from a low specificity and may be too lenient. A stricter ±15% acceptance window would increase specificity and overall accuracy while lowering the overall pass rate by only 3%.
journal_name
Ther Drug Monitjournal_title
Therapeutic drug monitoringauthors
Browne RW,Rosenkranz SL,Wang Y,Taylor CR,DiFrancesco R,Morse GDdoi
10.1097/FTD.0000000000000612subject
Has Abstractpub_date
2019-08-01 00:00:00pages
452-458issue
4eissn
0163-4356issn
1536-3694journal_volume
41pub_type
杂志文章abstract::A neurophysiologic test battery (consisting of a 24-hour, seven-channel electroencephalogram [EEG], EEG spectral analysis, multiple sleep latency test, visual evoked potentials, critical flicker fusion, and visual contrast sensitivity) was administered twice to 16 patients with juvenile myoclonic epilepsy (JME) in a d...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199902000-00014
更新日期:1999-02-01 00:00:00
abstract::The authors describe a rapid, useful, specific, and very sensitive high-performance liquid chromatographic assay for the determination of fluvastatin (FV) level using atorvastatin as the internal standard (IS). After a simple deproteinization of 1.0 mL of plasma with acetonitrile, the drug and IS were extracted with t...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200302000-00013
更新日期:2003-02-01 00:00:00
abstract:BACKGROUND:Desmopressin (D-amino D-arginine vasopressin: dDAVP) is used for the treatment of patients with hemophilia A and Von Willebrand disease. Studies on the rationale of dosing are scarce and mainly focus on the underlying causes of the vast differences in desmopressin response among individuals. The aim of this ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0000000000000791
更新日期:2020-12-01 00:00:00
abstract::A stabilized therapeutic drug monitoring procedure incorporating the novel Empore solid-phase extraction membrane (SPEM) for isolation of the antiarrhythmic drugs mexiletine (MEX) and flecainide (FLEC) from serum is described. Routinely, serum (0.5 ml), adjusted to pH 4.5, is passed through an octyl (C8) SPEM to extra...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199210000-00012
更新日期:1992-10-01 00:00:00
abstract::The objective of this study was to evaluate the analytical performance of the Abbott ARCHITECT Cyclosporine (CsA) immunoassay in 7 clinical laboratories in comparison to liquid chromatography/tandem mass spectrometry (LC/MS/MS), Abbott TDx, Cobas Integra 800, and the Dade Dimension Xpand immunoassay. The ARCHITECT ass...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,多中心研究
doi:10.1097/FTD.0b013e3181d46386
更新日期:2010-04-01 00:00:00
abstract::Mycophenolic acid, the active metabolite of the immunosuppressant and antiproliferative agent, mycophenolate mofetil, is primarily metabolized by glucuronidation to the inactive 7-O-glucuronide. Although the uridine diphosphate (UDP) 7-O-glucuronide is the principal excretion product of this drug, carboxyl-linked gluc...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,评审
doi:10.1097/00007691-200002000-00002
更新日期:2000-02-01 00:00:00
abstract::The effect of storage time and temperature on the stability of FK 506 in patient blood samples and quality control samples was assessed with the Abbott IMx microparticle enzyme immunoassay. Blood FK 506 concentrations measured at days 0, 2, 3, 4, 7, and 14 were stable at room (22 degrees C), refrigerator (4 degrees C)...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199506000-00009
更新日期:1995-06-01 00:00:00
abstract::The solubility and stability of amphotericin B in human serum in vitro was assessed using a sensitive high performance liquid chromatographic technique. The solubility of amphotericin B at concentrations ranging from 0.5 micrograms/ml to 10 micrograms/ml in human serum at pH 7.4, at 37 degrees C, and in 5% CO2 (simula...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198905000-00015
更新日期:1989-01-01 00:00:00
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journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
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更新日期:2008-02-01 00:00:00
abstract::It has been suggested that lamotrigine (LTG) may enhance the toxicity of carbamazepine (CBZ) by increasing the concentration of the active metabolite carbamazepine-10,11-epoxide (CBZ-E) in adult patients. The authors investigated this hypothesis in an add-on study in 11 children and 3 adolescents, aged 6-22 years, who...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199710000-00002
更新日期:1997-10-01 00:00:00
abstract::The effects of the cytochrome P450 (CYP) 2D6 genotype and cigarette smoking on the steady-state plasma concentrations (C(ss)) of fluvoxamine (FLV) and its demethylated metabolite fluvoxamino acid (FLA) were studied in 49 Japanese depressed patients receiving FLV 200 mg/d. The C(ss) of FLV and FLA were measured by HPLC...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200308000-00008
更新日期:2003-08-01 00:00:00
abstract::Toxicity from ingestion of the oleander plant is common. Oleandrin, the oleander glycoside, has structural similarity to cardiac glycoside digoxin and is known to cross react with various digoxin immunoassays. The authors studied the cross reactivity of oleandrin and its deglycosylated congener oleandrigenin with a fl...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199708000-00017
更新日期:1997-08-01 00:00:00
abstract::Based on the principle that vancomycin therapy requires sustained therapeutic concentrations while avoiding high peaks, some authors reported that optimal vancomycin levels could be ensured by measuring trough levels alone (Cmin). The aim of this work was to assess the performance of a one-compartment Bayesian forecas...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-199712000-00002
更新日期:1997-12-01 00:00:00
abstract::Sirolimus is a new immunosuppressive drug that has been evaluated in animal experiments. The current study was conducted on humans with reformulated sirolimus in doses from 3 mg/m2 to 15 mg/m2. Sixteen renal transplant recipients were included in this phase I study to determine the safety, tolerance, and preliminary p...
journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199708000-00007
更新日期:1997-08-01 00:00:00
abstract::It has been reported in scientific data that fluorescence polarization immunoassay (FPIA) results in overestimation of vancomycin in patients with renal failure. This overestimation is caused by interference of the degradation product, CDP-1, in this assay. Increases in vancomycin levels have also been reported in pat...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200108000-00020
更新日期:2001-08-01 00:00:00
abstract:INTRODUCTION:Enoxaparin is an anticoagulant used in the treatment of thromboembolic diseases. It is a hydrophilic molecule that is, predominantly, eliminated renally with few data to support dosing for subjects with renal impairment and/or obesity. A recently conducted randomized controlled clinical trial compared indi...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,随机对照试验
doi:10.1097/FTD.0b013e3181e64846
更新日期:2010-08-01 00:00:00
abstract::Ultrafiltration techniques for the separation of bound and free ligand are dependent on minimal amounts of protein-bound drug leakage through the membrane devices. A dye-impregnated test strip protein assay (Chemstrip-9) provides a rapid, visual assessment of membrane protein leakage. The test strips are sensitive to ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198507030-00014
更新日期:1985-01-01 00:00:00
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journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198709000-00016
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journal_title:Therapeutic drug monitoring
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00007691-199302000-00008
更新日期:1993-02-01 00:00:00
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journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,随机对照试验
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更新日期:2006-06-01 00:00:00
abstract:BACKGROUND:Antiepileptic drug therapeutic regimens often need to be adjusted individually on the basis of serum assays. We aimed to develop a quantitative, fast, and sensitive liquid chromatography-tandem mass spectrometry method to simultaneously analyze carbamazepine, oxcarbazepine, and the 10-11 epoxide carbamazepin...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
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更新日期:2012-02-01 00:00:00
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journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198309000-00014
更新日期:1983-01-01 00:00:00
abstract::Tyrosine kinase inhibitors are the standard of care for the treatment of chronic myeloid leukemia or Philadelphia chromosome-positive acute lymphoblastic leukemia. Dasatinib is a second-generation tyrosine kinase inhibitor that has been shown to be efficacious in treatment of patients with chronic myeloid leukemia or ...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章,评审
doi:10.1097/FTD.0b013e3181f4d9c5
更新日期:2010-12-01 00:00:00
abstract::A simple and rapid liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method for the analysis of voriconazole has been developed. For comparison, serum voriconazole was measured using HPLC and bioassay. For the HPLC-MS/MS assay, samples were prepared in a deep-well block by adding 10 microL of serum to 40 mic...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200412000-00011
更新日期:2004-12-01 00:00:00
abstract::A rapid and simultaneous determination of several analgesic antiinflammatory agents--ibuprofen, acetaminophen, indomethacin, and salicylic acid--in human serum was developed by using capillary zone electrophoresis (CZE) coupled with diode-array ultraviolet detection. After precipitation of serum protein with acetonitr...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-200310000-00006
更新日期:2003-10-01 00:00:00
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journal_title:Therapeutic drug monitoring
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更新日期:2008-12-01 00:00:00
abstract::Mycophenolate mofetil (MMF) is increasingly used for the treatment of autoimmune diseases (AID). In renal transplant recipients, it has been demonstrated that adjustment of the MMF dose according to the area under the plasma concentration versus time curve (AUC) of mycophenolic acid (MPA), the active moiety of MMF, im...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/FTD.0b013e3181a23f1a
更新日期:2009-06-01 00:00:00
abstract::A rapid and reliable micro procedure for the high pressure liquid chromatographic analysis of cimetidine. N"-cyano-N-methyl-N'-[2-[[(5-methyl-1H-imidazol-4-yl)methyl]thio]ethyl]guanidine, in serum or plasma is described. The percentage analytical recovery of cimetidine and internal standard (beta-hydroxypropyl-theophy...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-197901030-00010
更新日期:1979-01-01 00:00:00
abstract::Calculated creatinine clearance (CrCL) estimates are frequently used as estimates of aminoglycoside clearance (AGCL), despite being inadequately studied. Thirty surgical intensive care unit (SICU) patients with stable serum creatinines (0.6-6.3 mg/dl) and steady-state aminoglycoside levels were studied. A one-compartm...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198903000-00006
更新日期:1989-01-01 00:00:00
abstract::Lidocaine is widely used in antiarrhythmic therapy, and the need to monitor the drug concentration in the blood of patients receiving lidocaine is well established. We have developed a new assay for lidocaine designed for the routine clinical therapeutic drug monitoring laboratory. A 100-microliter aliquot of blood pl...
journal_title:Therapeutic drug monitoring
pub_type: 杂志文章
doi:10.1097/00007691-198102000-00010
更新日期:1981-01-01 00:00:00