LETTERS TO THE EDITOR:

C Antoine, F Silverman, and BK Young

Comparison of tissue pH monitor with a standard blood pH meter
Clin Chem 1981 27: 2070-2071. [PDF]  

JH Jonkman, JP Franke, R Schoenmaker, and RA de Zeeuw

Stability of theophylline in serum, plasma, and saliva stored at different temperatures
Clin Chem 1981 27: 2071-2072. [PDF]  

JP Straub

Influence of bilirubin on determination of angiotensin-converting enzyme
Clin Chem 1981 27: 2072.  

J Fuentes

Diagnostic specificity and prevalence
Clin Chem 1981 27: 2072-2073.  

T Makino and K Takahara

Reference values: accurate determination of plasma iron in infants by discrete nebulization in atomic absorption
Clin Chem 1981 27: 2073. [PDF]  

Articles:

JI Thorell

Internal sample attenuator counting (ISAC). A new technique for separating and measuring bound and free activity in radioimmunoassays
Clin Chem 1981 27: 1969-1973. [Abstract] [PDF]  

B Gerson, SR Cohen, IM Gerson, and GH Guest

Myelin basic protein, oligoclonal bands, and IgG in cerebrospinal fluid as indicators of multiple sclerosis
Clin Chem 1981 27: 1974-1977. [Abstract] [PDF]  

LC Clark, Jr, CA Duggan, TA Grooms, LM Hart, and ME Moore

One-minute electrochemical enzymic assay for cholesterol in biological materials
Clin Chem 1981 27: 1978-1982. [Abstract] [PDF]  

A Yamatodani and H Wada

Automated analysis for plasma epinephrine and norepinephrine by liquid chromatography, including a sample cleanup procedure
Clin Chem 1981 27: 1983-1987. [Abstract] [PDF]  

MC Sklov, SR Srinivasan, LS Webber, and GS Berenson

Variability of total cholesterol concentrations in serum by repeated measurements in a large pediatric population--limitations of quality controls for laboratory analyses
Clin Chem 1981 27: 1988-1992. [Abstract] [PDF]  

MJ Jawad and EA Wilson

Effect of variations in globulin concentrations on serum radioimmunoassay results, as exemplified by choriogonadotropin
Clin Chem 1981 27: 1993-1996. [Abstract] [PDF]  

RE Wehmann, SM Harman, S Birken, RE Canfield, and BC Nisula

Convenient radioimmunoassay for urinary human choriogonadotropin without interference by urinary human lutropin
Clin Chem 1981 27: 1997-2001. [Abstract] [PDF]  

JR Farley, CH Chesnut, 3d, and DJ Baylink

Improved method for quantitative determination in serum of alkaline phosphatase of skeletal origin
Clin Chem 1981 27: 2002-2007. [Abstract] [PDF]  

PW Wilson, RD Abbott, RJ Garrison, and WP Castelli

Estimation of very-low-density lipoprotein cholesterol from data on triglyceride concentration in plasma
Clin Chem 1981 27: 2008-2010. [Abstract] [PDF]  

LC Bloomer and PF Bray

Relative value of three laboratory methods in the diagnosis of multiple sclerosis
Clin Chem 1981 27: 2011-2013. [Abstract] [PDF]  

JL Millan and T Stigbrand

"Sandwich" enzyme immunoassay for placental alkaline phosphatase
Clin Chem 1981 27: 2014-2018. [Abstract] [PDF]  

TP Lee and CH Tan

A direct radioimmunoassay for aldosterone in unextracted serum and plasma
Clin Chem 1981 27: 2019-2021. [Abstract] [PDF]  

ML Wellby, L Guthrie, and CP Reilly

Evaluation of a new free-thyroxin assay
Clin Chem 1981 27: 2022-2024. [Abstract] [PDF]  

RJ Liedtke, G Kroon, and JD Batjer

Centrifugal analysis with automated sequential reagent addition: measurement of serum calcium
Clin Chem 1981 27: 2025-2028. [Abstract] [PDF]  

C Leiendecker-Foster and EF Freier

Improved simultaneous gas-chromatographic analysis for homovanillic acid and vanillylmandelic acid in urine
Clin Chem 1981 27: 2029-2032. [Abstract] [PDF]  

BE Pape

Antibody selectivity of a quantitative immunochemical assay for serum lidocaine
Clin Chem 1981 27: 2032-2034. [PDF]  

G Avigad and B Robertson

A coupled NAD+-peroxidase spectrophotometric assay for cholesterol
Clin Chem 1981 27: 2035-2037. [Abstract] [PDF]  

BE Pape

Enzyme immunoassay of disopyramide in serum
Clin Chem 1981 27: 2038-2040. [Abstract] [PDF]  

P Giulidori, M Galli-Kienle, and G Stramentinoli

Liquid-chromatographic monitoring of 5-methyltetrahydrofolate in plasma
Clin Chem 1981 27: 2041-2043. [Abstract] [PDF]  

I Deverill, R Jefferis, NR Ling, and WG Reeves

Monoclonal antibodies to human IgG: reaction characteristics in the centrifugal analyzer
Clin Chem 1981 27: 2044-2047. [Abstract] [PDF]  

PL Hurst and CJ Lovell-Smith

Optimized assay for serum angiotensin-converting enzyme activity
Clin Chem 1981 27: 2048-2052. [Abstract] [PDF]  

DL Busbee, DM Payne, DW Jasheway, S Carlisle, and AG Lacko

Separation and detection of lipoproteins in human serum by use of size- exclusion liquid chromatography: a preliminary report
Clin Chem 1981 27: 2052-2058. [Abstract] [PDF]  

CP Maury

Detection of aspartylglycosaminuria by gas--liquid chromatography
Clin Chem 1981 27: 2058-2060. [Abstract] [PDF]  

GM Anderson, JG Young, PI Jatlow, and DJ Cohen

Urinary free catecholamines determined by liquid chromatography-- fluorometry
Clin Chem 1981 27: 2060-2063. [Abstract] [PDF]  

FM Stearns

Determination of procainamide and N-acetylprocainamide by "high- performance" liquid chromatography
Clin Chem 1981 27: 2064-2067. [PDF]  

T Goffman, J Cantrell, and P Schein

Unexplained increase in serum creatine kinase isoenzyme MB activity in a lung cancer patient
Clin Chem 1981 27: 2068-2069. [Abstract] [PDF]  

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