Intrasubject variation of creatinine and specific gravity measurements in consecutive urine specimens of heroin users.
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چکیده
116 CLINICAL CHEMISTRY, Vol. 41, No. 1, 1995 drugs in full-scan and selected.ion monitoring modes. Clin Chem 1994;40:216-20. 2. Doolittle MH, Lincoln K, Graves SW. Unexplained increase in serum digoxin: case report. Clin Chem 1994;40:487-92. 3. Critchfield GC, Wilkins DG, Loughmiller DL, Davis BW, Rollins DE. Antibody-mediated interference of a homogeneous immunoassay. J Anal Toxicol 1993;17:69-72. 4. Schwarzhoff R, Cody JT. The effects of adulterating agents on FPLA analysis of urine for drugs of abuse. J Anal Toxicol 1993;17: 14-7. 5. Poklis A, Hall KV, Still J, Binder SR. Ranitidine interference with the monoclonal EMIT d.a.u. amphetamine/methamphetamine immunoassay. J Anal Toxicol 1991;15:101-3. 6. Larsen J, Fogerson R. Nonsteroidal anti-inflammatory drug interference in TDx assays for abused drugs [Tech Brief]. Clin Chem 1988;34:987-8. 7. Rollins DE, Jennison TA, Jones G. Investigation of interference by nonsteroidal anti-inflammatory drugs in urine tests for abused drugs. Clin Chem 1990;36:602-6. 8. Greenblatt DJ, Maths R, Scavone JM, Blyden GT, Harmatz JS, Shader RI. Oxaprozin pharmacokinetics in the elderly. Br J Clin Pharmacol 1985;19:373-8. 9. Hale VG, Bashaw ED. Pharmacokinetics of oxaprozin. Clin Pharmacol 1993;12:255-6.
منابع مشابه
Normalization of urinary drug concentrations with specific gravity and creatinine.
Excessive fluid intake can substantially dilute urinary drug concentrations and result in false-negative reports for drug users. Methods for correction ("normalization") of drug/metabolite concentrations in urine have been utilized by anti-doping laboratories, pain monitoring programs, and in environmental monitoring programs to compensate for excessive hydration, but such procedures have not b...
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OBJECTIVE To define the mean intraindividual biological variation in urinary concentrations of cadmium and retinol binding protein (RBP) in untimed, random urine samples and the influence of creatinine or specific gravity correction on reducing this variation. The relation between biological variation and analytical variation in defining uncertainty in a single measurement and significant diffe...
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عنوان ژورنال:
- Clinical chemistry
دوره 41 1 شماره
صفحات -
تاریخ انتشار 1995