ARTICLES:

LA Wheeler and LB Sheiner

A clinical evaluation of various delta check methods
Clin Chem 1981 27: 5-9. [Abstract] [PDF]  

RW Reid and CM Gerbeck

Detection of pentazocine and tripelennamine in urine
Clin Chem 1981 27: 10-13. [Abstract] [PDF]  

FJ Hawker and GS Challand

Effect of outlying standard points on curve fitting in radioimmunoassay
Clin Chem 1981 27: 14-17. [Abstract] [PDF]  

P Masson, P Ohlsson, and I Bjorkhem

Combined enzymic-Jaffe method for determination of creatinine in serum
Clin Chem 1981 27: 18-21. [Abstract] [PDF]  

TM Li, JL Benovic, RT Buckler, and JF Burd

Homogeneous substrate-labeled fluorescent immunoassay for theophylline in serum
Clin Chem 1981 27: 22-26. [Abstract] [PDF]  

ZL Bandi, JB Fuller, DE Bee, and GP James

Extended clinical trial and evaluation of glucose determination with the Eastman Kodak Ektachem GLU/BUN Analyzer
Clin Chem 1981 27: 27-34. [Abstract] [PDF]  

T Ono, K Kitaguchi, M Takehara, M Shiiba, and K Hayami

Serum-constituents analyses: effect of duration and temperature of storage of clotted blood
Clin Chem 1981 27: 35-38. [Abstract] [PDF]  

VT Kung, PM Weber, and LV dos Remedios

Double-antibody radioimmunoassay of thyroid microsomal antibody in serum
Clin Chem 1981 27: 39-42. [Abstract] [PDF]  

WJ Raum and RS Swerdloff

Urinary metanephrine radioimmunoassay: comparison with the colorimetric assay
Clin Chem 1981 27: 43-47. [Abstract] [PDF]  

JA Knight and RE Haymond

gamma-Glutamyltransferase and alkaline phosphatase activities compared in serum of normal children and children with liver disease
Clin Chem 1981 27: 48-51. [Abstract] [PDF]  

MC Stuart, S Ellis, L Gowlland, and S Tuff

Lectins used to prepare serum free of glycoprotein hormones for use as a matrix in radioimmunoassay
Clin Chem 1981 27: 52-56. [Abstract] [PDF]  

RC Elser and K McKenna

Creatine kinase B-subunit activity in human sera: temporal aspects of its sensitivity after myocardial infarction
Clin Chem 1981 27: 57-60. [Abstract] [PDF]  

JE Haddow, ME Morin, MS Holman, and WA Miller

Acetylcholinesterase and fetal malformations: modified qualitative technique for diagnosis of neural tube defects
Clin Chem 1981 27: 61-63. [Abstract] [PDF]  

D Collet-Cassart, CG Magnusson, JG Ratcliffe, CL Cambiaso, and PL Masson

Automated particle-counting immunoassay for alpha-fetoprotein
Clin Chem 1981 27: 64-67. [Abstract] [PDF]  

PA Pleban, J Kerkay, and KH Pearson

Polarized Zeeman-effect flameless atomic absorption spectrometry of cadmium, copper, lead, and manganese in human kidney cortex
Clin Chem 1981 27: 68-72. [Abstract] [PDF]  

NE Vieira and JW Hansen

Zinc determined in 10-microL serum or urine samples by flameless atomic absorption spectrometry
Clin Chem 1981 27: 73-77. [Abstract] [PDF]  

VA Pilon, PJ Howanitz, JH Howanitz, and N Domres

Day-to-day variation in serum ferritin concentration in healthy subjects
Clin Chem 1981 27: 78-82. [Abstract] [PDF]  

P Urdal and P Kierulf

Sensitive and specific radioimmunoassay for creatine kinase BB isoenzyme in serum, with use of an autoantibody
Clin Chem 1981 27: 83-87. [Abstract] [PDF]  

SM Pettit, DA Nealon, and AR Henderson

Purification of lactate dehydrogenase isoenzyme-5 from human liver
Clin Chem 1981 27: 88-93. [Abstract] [PDF]  

AP Schellekens, GT Sanders, W Thornton, and T van Groenestein

Sources of variation in the column-chromatographic determination of glycohemoglobin (HbA1)
Clin Chem 1981 27: 94-99. [Abstract] [PDF]  

DC Wigfield and JP Farant

Assay of delta-aminolaevulinate dehydratase in 10 microL of blood
Clin Chem 1981 27: 100-103. [Abstract] [PDF]  

L Kahan, VL Go, and FC Larson

Increased activity in serum of an alkaline phosphatase isoenzyme in cancer: analytical method and preliminary clinical studies
Clin Chem 1981 27: 104-107. [Abstract] [PDF]  

BA Faraj, DH Lawson, DW Nixon, DR Murray, VM Camp, FM Ali, M Black, W Stacciarini, and Y Tarcan

Melanoma detection by enzyme-radioimmunoassay of L-dopa, dopamine, and 3-O-methyldopamine in urine
Clin Chem 1981 27: 108-112. [Abstract] [PDF]  

D Jung, M Mayersohn, and D Perrier

Gas-chromatographic assay for thiopental in plasma, with use of a nitrogen-specific detector
Clin Chem 1981 27: 113-115. [Abstract] [PDF]  

GR Warnick, C Mayfield, and JJ Albers

Evaluation of quality-control materials for high-density-lipoprotein cholesterol quantitation
Clin Chem 1981 27: 116-123. [Abstract] [PDF]  

RW Burlingame, GH Thomas, RL Stevens, K Schmid, and HW Moser

Direct quantitation of glycosaminoglycans in 2 mL of urine from patients with mucopolysaccharidoses
Clin Chem 1981 27: 124-128. [Abstract] [PDF]  

AJ Quattrone and RS Putnam

A single liquid-chromatographic procedure for therapeutic monitoring of theophylline, acetaminophen, or ethosuximide
Clin Chem 1981 27: 129-132. [Abstract] [PDF]  

JE Haddow, EM Kloza, GJ Knight, and DE Smith

Relation between maternal weight and serum alpha-fetoprotein concentration during the second trimester
Clin Chem 1981 27: 133-134. [Abstract] [PDF]  

GN Bowers, Jr, RB McComb, and A Upretti

4-nitrophenyl phosphate--characterization of high-purity materials for measuring alkaline phosphatase activity in human serum
Clin Chem 1981 27: 135-143. [Abstract] [PDF]  

WS Robertson

Optimizing determination of plasma albumin by the bromcresol green dye- binding method
Clin Chem 1981 27: 144-146. [Abstract] [PDF]  

LM Neckers, LE Delisi, and RJ Wyatt

Liquid-chromatographic quantification of plasma phenylalanine, tyrosine, and tryptophan
Clin Chem 1981 27: 146-148. [Abstract] [PDF]  

MJ Obregon, A Kurtz, R Ekins, and G Morreale de Escobar

Evaluation of free and total L-thyroxine in serum by a commercial procedure
Clin Chem 1981 27: 149-152. [Abstract] [PDF]  

RB Schifman and PR Finley

Measurement of near-normal concentrations of erythrocyte protoporphyrin with the hematofluorometer: influence of plasma on "front-surface illumination" assay
Clin Chem 1981 27: 153-156. [Abstract] [PDF]  

DE Bruns, J Savory, AC Titheradge, RE Cross, and MR Wills

Evaluation of the IFCC-recommended procedure for serum aspartate aminotransferase as modified for use with the centrifugal analyzer
Clin Chem 1981 27: 156-159. [Abstract] [PDF]  

RP Tracy, LE Wold, JD Jones, and MF Burritt

Colorimetric vs liquid-chromatographic determination of urinary 5- hydroxyindole-3-acetic acid
Clin Chem 1981 27: 160-162. [Abstract] [PDF]  

RJ Griebel, EC Knoblock, and TR Koch

Measurement of serum lipase activity with the oxygen electrode
Clin Chem 1981 27: 163-165. [Abstract] [PDF]  

D Jung, M Mayersohn, and D Perrier

The "ultra-free" ultrafiltration technique compared with equilibrium dialysis for determination of unbound thiopental concentrations in serum
Clin Chem 1981 27: 166-168. [Abstract] [PDF]  

SL Braun, A Tausch, W Vogt, K Jacob, and M Knedel

Evaluation of a new valproic acid enzyme immunoassay and comparison with a capillary gas-chromatographic method
Clin Chem 1981 27: 169-172. [Abstract] [PDF]  

JT Taylor, S Freeman, and P Brewer

Liquid chromatography at 3-methoxy-4-hydroxyphenylethylene glycol in urine with fluorescence detection
Clin Chem 1981 27: 173-175. [Abstract] [PDF]  

RB Schifman, PF Brumbaugh, D Grover, PR Finley, and EJ Harrow

A cellulose acetate electrophoretic procedure evaluated for quantitation of high-density lipoprotein cholesterol
Clin Chem 1981 27: 175-178. [Abstract] [PDF]  

R Haeckel

Assay of creatinine in serum, with use of fuller's earth to remove interferents
Clin Chem 1981 27: 179-183. [PDF]  

MT Meistas, MS Kumar, and OP Schumacher

Diagnosis of self-induced hyperinsulinism in an insulin-dependent diabetic patient by radioimmunoassay of free C-peptide
Clin Chem 1981 27: 184-186. [Abstract] [PDF]  

R. Haeckel, Ch. Collombel, T. D. Geary, F. L. Mitchell, R. G. Nadeau, and K. Okuda

INTERNATIONAL FEDERATION OF CLINICAL CHEMISTRY
Clin Chem 1981 27: 187-191. [PDF]  

S Winsten and L Sideman

History of the Philadelphia Section, American Association for Clinical Chemistry
Clin Chem 1981 27: 192-194. [PDF]  

LETTERS TO THE EDITOR:

A Iob and HA Mottola

Uricase immobilized on walls of glass tubes used as reactors in continuous-flow analyses
Clin Chem 1981 27: 195-196. [PDF]  

RS Schifreen, J Sindab, D Bologna, C Cameron, and RW Burnett

Diethylamine prevents precipitation in the alkaline buffer reagent for the kinetic Jaffe determination of serum creatinine
Clin Chem 1981 27: 196-197. [PDF]  

NM Papadopoulos, EJ Schaefer, and DW Anderson

Demonstration of heterogeneity in a high-density lipoprotein subfraction
Clin Chem 1981 27: 197-198. [PDF]  

JP Straub

Assessment of a new method for determination of xylose in serum and urine
Clin Chem 1981 27: 198. [PDF]  

RC George

Improved sample treatment before liquid-chromatographic determination of anticonvulsants in serum
Clin Chem 1981 27: 198-199. [PDF]  

N Peled

An enzymic bicarbonate reagent that is free of pyruvate interference
Clin Chem 1981 27: 199-200. [PDF]  

M Doren, D Conlon, and L Blankstein

Improved beta-zone resolution in agarose gel electrophoresis
Clin Chem 1981 27: 200. [PDF]  

E Rutter and PH Whitehead

Postcoital enzyme activities in the vagina
Clin Chem 1981 27: 200-201. [PDF]  

Wadie F. Gohara

In Reply: Postcoital Enzyme Activities in the Vagina
Clin Chem 1981 27: 201. [PDF]  

P Jaynes and GF Kapke

Sulfasalazine interferes with coulometry of serum iron
Clin Chem 1981 27: 202-203. [PDF]  

JS Krouwer

Observations on comparisons of within-run and day-to-day precision
Clin Chem 1981 27: 202. [PDF]  

IM McIntyre, TR Norman, and GD Burrows

In vitro stability of nomifensine in plasma
Clin Chem 1981 27: 203-204. [PDF]  

GM Chan, KO Ash, W Hentschel, and J Wu

Effects of bilirubin on ionized calcium
Clin Chem 1981 27: 204-205. [PDF]  

K Jung, B Ohlrich, D Mildner, and D Scholz

Pyridoxal phosphate activation of aminotransferases in serum of patients with kidney transplants
Clin Chem 1981 27: 205-206. [PDF]  

EJ de Haas and FA de Wolff

Microassay of lead in blood, with an improved procedure for silanization of reagent tubes
Clin Chem 1981 27: 205. [PDF]  

IW Chen, LA Heminger, and HR Maxon

Nonspecific binding in thyrotropin radioimmunoassay with double- antibody separation
Clin Chem 1981 27: 206-207. [PDF]  

CW Denko, P Gabriel, and M Petricevic

Urinary excretion of material with beta-endorphin immunoreactivity
Clin Chem 1981 27: 207-208. [PDF]  

FA Sedor and CM Holleman

Investigation of captopril for methodological interferences in continuous-flow (SMAC) profiles
Clin Chem 1981 27: 208-209. [PDF]  

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