ARTICLES:

C Izzo, F Grillo, and E Murador

Improved method for determination of high-density-lipoprotein cholesterol I. Isolation of high-density lipoproteins by use of polyethylene glycol 6000
Clin Chem 1981 27: 371-374. [Abstract] [PDF]  

F Grillo, C Izzo, G Mazzotti, and E Murador

Improved method for determination of high-density-lipoprotein cholesterol II. Enzymic determination of cholesterol in high-density lipoprotein fractions with a sensitive reagent
Clin Chem 1981 27: 375-379. [Abstract] [PDF]  

MA Pesce and SH Bodourian

Enzyme immunoassay and enzyme inhibition assay of methotrexate, with use of the centrifugal analyzer
Clin Chem 1981 27: 380-384. [Abstract] [PDF]  

HL Webster and WK Barlow

New approach to cystic fibrosis diagnosis by use of an improved sweat- induction/collection system and osmometry
Clin Chem 1981 27: 385-387. [Abstract] [PDF]  

MC Hsieh

Fluorescent spot test for detecting carbohydrate-splitting enzymes in meconium
Clin Chem 1981 27: 388-390. [Abstract] [PDF]  

L Enkema, Jr, GA Holloway, Jr, DW Piraino, D Harry, GL Zick, and MA Kenny

Laser Doppler velocimetry vs heater power as indicators of skin perfusion during transcutaneous O2 monitoring
Clin Chem 1981 27: 391-396. [Abstract] [PDF]  

RE Ford, CN Ou, and RD Ellefson

Liquid-chromatographic analysis for urinary porphyrins
Clin Chem 1981 27: 397-401. [Abstract] [PDF]  

DA Nealon, SM Pettit, and AR Henderson

Activation of human creatine kinase isoenzymes by pH and various sulfhydryl and chelating agents
Clin Chem 1981 27: 402-404. [Abstract] [PDF]  

PR Finley, JA Dye, RJ Williams, and DA Lichti

Rate-nephelometric inhibition immunoassay of phenytoin and phenobarbital
Clin Chem 1981 27: 405-409. [Abstract] [PDF]  

LJ McDonald, NI Robin, and L Siegel

New method for determining lecithin and sphingomyelin in amniotic fluid
Clin Chem 1981 27: 410-416. [Abstract] [PDF]  

WA Joern

Gas-chromatographic assay of free phenytoin in ultrafiltrates of plasma: test of a new filtration apparatus and specimen stability
Clin Chem 1981 27: 417-421. [Abstract] [PDF]  

K Jung, D Scholz, and G Schreiber

Improved determination of D-glucaric acid in urine
Clin Chem 1981 27: 422-426. [Abstract] [PDF]  

EP Diamandis, DS Papastathopoulos, and TP Hadjiioannou

Continuous-flow serum albumin determination by reaction with picrate ions, with use of a flow-through picrate ion electrode
Clin Chem 1981 27: 427-430. [Abstract] [PDF]  

HJ Rudolph, KD Gerbitz, G Michal, and OH Wieland

Enzymic determination of branched-chain amino acids
Clin Chem 1981 27: 431-433. [Abstract] [PDF]  

BG Charles, NW Jacobsen, and PJ Ravenscroft

Rapid liquid-chromatographic determination of metformin in plasma and urine
Clin Chem 1981 27: 434-436. [Abstract] [PDF]  

DR Uges and P Bouma

Liquid-chromatographic determination of 4-aminopyridine in serum, saliva, and urine
Clin Chem 1981 27: 437-440. [Abstract] [PDF]  

GR Gotelli, JH Wall, PM Kabra, and LJ Marton

Fluorometric liquid-chromatographic determination of serum cortisol
Clin Chem 1981 27: 441-443. [Abstract] [PDF]  

MJ Jongen, WJ van der Vijgh, HJ Willems, and JC Netelenbos

Analysis for 1,25-dihydroxyvitamin D in human plasma, after a liquid- chromatographic purification procedure, with a modified competitive protein-binding assay
Clin Chem 1981 27: 444-450. [Abstract] [PDF]  

PJ Bossuyt, R Van den Bogaert, SL Scharpe, and Y Van Maercke

Relation of age to isoenzyme pattern and total activity of amylase in serum
Clin Chem 1981 27: 451-454. [Abstract] [PDF]  

EP Diamandis and TP Hadjiioannou

Kinetic potentiometric determination of creatinine in serum with a picrate ion-selective membrane electrode
Clin Chem 1981 27: 455-457. [Abstract] [PDF]  

TK Gray, T McAdoo, D Pool, GE Lester, ME Williams, and G Jones

A modified radioimmunoassay for 1,25-dihydroxycholecalciferol
Clin Chem 1981 27: 458-463. [Abstract] [PDF]  

RJ Wood and DG Williams

Colorimetric determination of serum 5'-nucleotidase without deproteinization
Clin Chem 1981 27: 464-465. [Abstract] [PDF]  

J Toffaletti, D Tompkins, and G Hoff

The Worthington "ultrafree" device evaluated for determination of ultrafiltrable calcium in serum
Clin Chem 1981 27: 466-468. [Abstract] [PDF]  

GJ Proksch and DP Bonderman

An optically clear hypercholesterolemic hypertriglyceridemic quality- control material prepared from animal lipid sources
Clin Chem 1981 27: 468-471. [Abstract] [PDF]  

H Aleyassine, RJ Gardiner, LA Blankstein, and ME Dempsey

Agar gel electrophoretic determination of glycosylated hemoglobin: effect of variant hemoglobins, hyperlipidemia, and temperature
Clin Chem 1981 27: 472-475. [Abstract] [PDF]  

EJ Hayes, RE Gleason, JS Soeldner, M Wacks, and L Blankstein

Measurement of hemoglobin A1 by liquid chromatography and by agar gel electrophoresis compared
Clin Chem 1981 27: 476-479. [Abstract] [PDF]  

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

Extended clinical trial and evaluation of urea nitrogen determination with the Ektachem GLU/BUN analyzer
Clin Chem 1981 27: 480-485. [Abstract] [PDF]  

TL Gross, MV Wilson, PM Kuhnert, and RJ Sokol

Clinical laboratory determination of phosphatidylglycerol: one- and two- dimensional chromatography compared
Clin Chem 1981 27: 486-490. [Abstract] [PDF]  

EA Robertson, RJ Elin, and E Johnson

Low results for inorganic phosphorus with the SMAC continuous-flow analyzer
Clin Chem 1981 27: 490-492. [Abstract] [PDF]  

JO Westgard, PL Barry, MR Hunt, and T Groth

A multi-rule Shewhart chart for quality control in clinical chemistry
Clin Chem 1981 27: 493-501. [PDF]  

L Orlowitz and FH Bostwick

Use of glass beads to defibrinate serum in "microtainers"
Clin Chem 1981 27: 511.  

Elliot S. Vesell

Goodman and Gilman's The Pharmacological Basis of Therapeutics, 6th ed. A. G. Oilman, L. S. Goodman, and A. Gilman, Eds., Macmillan Publishing Co., New York, NY 10022. xvi + 1843 pp. Pub. August 1980. $45.00
Clin Chem 1981 27: 515. [PDF]  

Arthur J. McBay

Biological Monitoring Methods for Industrial Chemicals. R. C. Baselt. Biomedical Publications, Davis, CA 95616. x + 301 pp. Pub. 1980. $47.00
Clin Chem 1981 27: 516. [PDF]  

LETTERS TO THE EDITOR:

HD Koehn and A Mostbeck

Age-dependence of immunoreactive trypsin concentrations in serum
Clin Chem 1981 27: 502.  

SJ Soldin and JG Hill

Liquid-chromatographic analysis for urinary 4-hydroxy-3-methoxymandelic acid and 4-hydroxy-3-methoxyphenylacetic acid, and its use in investigation of neural crest tumors
Clin Chem 1981 27: 502-503.  

MK Fleetwood, BA Maier, and SH Lewis

Normal range for the third component of complement by solid-phase immunofluorescence
Clin Chem 1981 27: 503-504. [PDF]  

NP Kubasik, M Ricotta, T Hunter, and HE Sine

Clinical evaluation of two thyrotropin radioimmunoassay kits: human serum matrix calibrators and bovine serum matrix calibrators
Clin Chem 1981 27: 504-505. [PDF]  

NP Kubasik, M Ricotta, T Hunter, and HE Sine

Evaluation of a new ferritin radioimmunoassay kit
Clin Chem 1981 27: 505.  

DA Nealon, SM Pettit, and AR Henderson

Diluent pH and the stability of the thiol group in monothioglycerol, N- acetyl-L-cysteine, and 2-mercaptoethanol
Clin Chem 1981 27: 505-506.  

MR Glick, MB Kleiman, WR Moorehead, TO Oei, and SP Andreoli

Nafcillin may cause a subtle pseudoproteinuria
Clin Chem 1981 27: 506-507. [PDF]  

WC Dierksheide

Official caution on CEA assay
Clin Chem 1981 27: 507-508. [PDF]  

DS Goldstein and GF Feuerstein

Improved reliability of the liquid chromatography--electrochemical detection assay technique for measuring plasma epinephrine
Clin Chem 1981 27: 508.  

Error in reporting unsaturated iron-binding capacity of serum
Clin Chem 1981 27: 508-509.  

DG Rhoads

New PDP-8A computer program (DATAIO) for handling data from automated systems
Clin Chem 1981 27: 509.  

CH Shackleton

Urinary steroid metabolite analysis: potential for renaissance
Clin Chem 1981 27: 509-511.  

RM Johnson

Acetic acid interference with determination of 5-hydroxyindoleacetic acid obviated
Clin Chem 1981 27: 511.  

P Schwandt, WO Richter, and N Kriegisch

Simple automated system for continuous-flow determination of glycerol
Clin Chem 1981 27: 512. [PDF]  

AM Conlan, KJ Tabor, and LJ Lesko

Liquid chromatography of anticonvulsants in an inappropriately drawn (lipemic) serum sample
Clin Chem 1981 27: 513. [PDF]  

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