LETTERS TO THE EDITOR:

N Dahlmann, KA Brensing, D Klingmuller, and F Bidlingmaier

"Hook-effect" in a patient with a gonadotropin-secreting tumor
Clin Chem 1990 36: 168. [PDF]  

N Mitsuda, H Tamaki, and N Amino

Cord serum thyrotropin and birth weight in a normal Japanese population
Clin Chem 1990 36: 168-169. [PDF]  

MJ Khosravi

Shifting the "hook effect" in one-step immunometric assays
Clin Chem 1990 36: 169-170. [PDF]  

FA Abu-Farsakh, MN Hussein, SM Itani, MA Jobeh, and NA Abu-Farsakh

Correlations between concentrations of lipids in serum and bile of patients with gallstones
Clin Chem 1990 36: 170-171. [PDF]  

RG Mueller and GE Lang

DuPont aca overestimates high concentrations of total protein
Clin Chem 1990 36: 171. [PDF]  

A Dasgupta, DA Dennen, S Saldana, H Chou, and RW McLawhon

Digoxin-like immunoreactive substances in kidney- and liver-transplant patients
Clin Chem 1990 36: 171-172. [PDF]  

P Luppa and D Neumeier

Effect of sex-hormone-binding globulin on no-extraction immunoassays for testosterone
Clin Chem 1990 36: 172-173. [PDF]  

P Bodlaender

No SHBG interference with the "Coat-A-Count Total Testosterone" direct RIA kit
Clin Chem 1990 36: 173. [PDF]  

J Pitt

Association between paracetamol and pyroglutamic aciduria
Clin Chem 1990 36: 173-174. [PDF]  

SN Kahn

Urinary "oligoclonal" bands in AIDS
Clin Chem 1990 36: 174-175. [PDF]  

MR Bonnin, MT Gonzalez, J Huguet, and MA Navarro

Intact parathyrin measured in serum from patients with chronic renal failure
Clin Chem 1990 36: 175-176. [PDF]  

J Sheldon, P Riches, and JR Hobbs

Neopterin radioimmunoassay results are unaffected by beta- propiolactone: safer monitoring of HIV-positive serum samples
Clin Chem 1990 36: 175. [PDF]  

GO Evans and CE Parsons

Plasma albumin determination in the Cobas Mira: effect of measurement wavelength
Clin Chem 1990 36: 176-177. [PDF]  

K Jung and G Jahnchen

How should we measure activity of alanine aminopeptidase in urine?
Clin Chem 1990 36: 177-178. [PDF]  

J Seth

Estimation of sensitivity of immunoassays
Clin Chem 1990 36: 178. [PDF]  

T Kanno, M Maekawa, S Uchiyama, and Y Tsutiya

Criteria for detection of heterozygous individuals with lactate dehydrogenase subunit deficiencies
Clin Chem 1990 36: 178-179. [PDF]  

K Pittschieler, G Massi, F Menchicchi, C Chiarelli, and A Marino

Alpha 1-antitrypsin typing test evaluated
Clin Chem 1990 36: 179-180. [PDF]  

Articles:

JG Goddard and GJ Kontoghiorghes

Development of an HPLC method for measuring orally administered 1- substituted 2-alkyl-3-hydroxypyrid-4-one iron chelators in biological fluids
Clin Chem 1990 36: 5-8. [Abstract] [PDF]  

TW Wu, GA Levy, S Yiu, JX Au, PD Greig, SM Strasberg, M Ettles, M Abecassis, RA Superina, and B Langer

Delta and conjugated bilirubin as complementary markers of early rejection in liver-transplant recipients
Clin Chem 1990 36: 9-14. [Abstract] [PDF]  

GR Warnick, RH Knopp, V Fitzpatrick, and L Branson

Estimating low-density lipoprotein cholesterol by the Friedewald equation is adequate for classifying patients on the basis of nationally recommended cutpoints
Clin Chem 1990 36: 15-19. [Abstract] [PDF]  

M Sandkamp, H Funke, H Schulte, E Kohler, and G Assmann

Lipoprotein(a) is an independent risk factor for myocardial infarction at a young age
Clin Chem 1990 36: 20-23. [Abstract] [PDF]  

K Kalbe, S Nishimura, H Ishii, N Sunahara, S Naruto, and S Kurooka

Competitive binding enzyme immunoassay for zonisamide, a new antiepileptic drug, with selected paired-enzyme labeled antigen and antibody [published erratum appears in Clin Chem 1990 Aug;36(8 Pt 1):1530]
Clin Chem 1990 36: 24-27. [Abstract] [PDF]  

T Hervig, T Volundardottir, AM Bakken, and M Farstad

Thrombin-induced serotonin release as an in vitro indicator of the functional integrity of stored platelets
Clin Chem 1990 36: 28-31. [Abstract] [PDF]  

H Shimizu, K Taniguchi, M Sugiyama, and T Kanno

Rapid enzymatic analysis of plasma for tyrosine
Clin Chem 1990 36: 32-35. [Abstract] [PDF]  

JR McNamara, JS Cohn, PW Wilson, and EJ Schaefer

Calculated values for low-density lipoprotein cholesterol in the assessment of lipid abnormalities and coronary disease risk
Clin Chem 1990 36: 36-42. [Abstract] [PDF]  

A Krachmalnicoff, S Tombesi, C Valsecchi, A Albertini, and PM Mannucci

A monoclonal antibody to human protein S used as the capture antibody for measuring total protein S by enzyme immunoassay
Clin Chem 1990 36: 43-46. [Abstract] [PDF]  

G Bugari, C Poiesi, A Beretta, S Ghielmi, and A Albertini

Quantitative immunoenzymatic assay of human lutropin, with use of a bi- specific monoclonal antibody
Clin Chem 1990 36: 47-52. [Abstract] [PDF]  

G Lindstedt, A Jacobsson, PA Lundberg, H Hedelin, S Pettersson, and B Unsgaard

Determination of prostate-specific antigen in serum by immunoradiometric assay
Clin Chem 1990 36: 53-58. [Abstract] [PDF]  

RN Weijers, R de Bruijn, J Mulder, and H Kruijswijk

Improved purification of human lactate dehydrogenase isoenzyme-3 and studies with its fluorescein isothiocyanate and biotin conjugates
Clin Chem 1990 36: 59-64. [Abstract] [PDF]  

K Kobayashi, N Ogasahara, T Sakoguchi, M Kimura, K Taniuchi, and A Matsuoka

Agarose gel electrophoresis with nitroblue tetrazolium coloration for determination of glycated lipoproteins in serum from diabetics
Clin Chem 1990 36: 65-69. [Abstract] [PDF]  

PM Meulenberg and JA Hofman

Differences between concentrations of salivary cortisol and cortisone and of free cortisol and cortisone in plasma during pregnancy and postpartum
Clin Chem 1990 36: 70-75. [Abstract] [PDF]  

R Babiel, P Willnow, M Baer, M van Gent, and V Ehrhardt

A new enzyme immunoassay for prolactin in serum or plasma
Clin Chem 1990 36: 76-80. [Abstract] [PDF]  

CM Jabs, P Neglen, B Eklof, and EJ Thomas

Adenosine, inosine, and hypoxanthine/xanthine measured in tissue and plasma by a luminescence method
Clin Chem 1990 36: 81-87. [Abstract] [PDF]  

H Ohishi, M Skinner, N Sato-Araki, T Okuyama, F Gejyo, A Kimura, AS Cohen, and K Schmid

Glycosaminoglycans of the hemodialysis-associated carpal synovial amyloid and of amyloid-rich tissues and fibrils of heart, liver, and spleen
Clin Chem 1990 36: 88-91. [Abstract] [PDF]  

P Vihko, R Kurkela, J Ramberg, I Pelkonen, and R Vihko

Time-resolved immunofluorometric assay of human prostate-specific antigen
Clin Chem 1990 36: 92-95. [Abstract] [PDF]  

WJ Warwick, LG Hansen, and ME Werness

Quantification of chloride in sweat with the Cystic Fibrosis Indicator System
Clin Chem 1990 36: 96-98. [Abstract] [PDF]  

JP Chapelle and M el Allaf

Automated quantification of creatine kinase MB isoenzyme in serum by radial partition immunoassay, with use of the Stratus analyzer
Clin Chem 1990 36: 99-101. [Abstract] [PDF]  

T Shibasaki, H Gomi, F Ishimoto, and T Miyahara

Urinary N-acetyl-beta-D-glucosaminidase isoenzyme activity as measured by fast protein liquid chromatography in patients with nephrotic syndrome
Clin Chem 1990 36: 102-103. [Abstract] [PDF]  

AO Okorodudu, RW Burnett, RB McComb, and GN Bowers, Jr

Evaluation of three first-generation ion-selective electrode analyzers for lithium: systematic errors, frequency of random interferences, and recommendations based on comparison with flame atomic emission spectrometry
Clin Chem 1990 36: 104-110. [Abstract] [PDF]  

GW Mellor and G Gallacher

Fluorescence polarization immunoassay of urinary vanillylmandelic acid
Clin Chem 1990 36: 110-112. [Abstract] [PDF]  

F Tagliaro, R Dorizzi, A Frigerio, and M Marigo

Non-extraction HPLC method for simultaneous measurement of dyphylline and doxofylline in serum
Clin Chem 1990 36: 113-115. [Abstract] [PDF]  

MJ Strassman, GL Lensmeyer, DA Wiebe, and IH Carlson

Three commercial polyclonal immunoassays for cyclosporine in whole blood compared: 1. Results with patients' specimens
Clin Chem 1990 36: 115-118. [Abstract] [PDF]  

GL Lensmeyer, DA Wiebe, IH Carlson, and DJ deVos

Three commercial polyclonal immunoassays for cyclosporine in whole blood compared: 2. Cross-reactivity of the antisera with cyclosporine metabolites
Clin Chem 1990 36: 119-123. [Abstract] [PDF]  

I Wybo, M Van Blerk, R Malfait, P Goubert, and F Gorus

Oligoclonal bands in cerebrospinal fluid detected by PhastSystem isoelectric focusing
Clin Chem 1990 36: 123-125. [Abstract] [PDF]  

JG Schwartz, WT Phillips, and B Aghebat-Khairy

Revision of the oral glucose tolerance test: a pilot study
Clin Chem 1990 36: 125-128. [Abstract] [PDF]  

K Asayama, A Miyao, and K Kato

High-density lipoprotein (HDL), HDL2, and HDL3 cholesterol concentrations determined in serum of newborns, infants, children, adolescents, and adults by use of a micromethod for combined precipitation ultracentrifugation
Clin Chem 1990 36: 129-131. [Abstract] [PDF]  

HC Morris, PD Overton, JR Ramsay, RS Campbell, PM Hammond, T Atkinson, and CP Price

Development and validation of an automated, enzyme-mediated colorimetric assay of salicylate in serum
Clin Chem 1990 36: 131-135. [Abstract] [PDF]  

ED Schleicher and BW Vogt

Standardization of serum fructosamine assays
Clin Chem 1990 36: 136-139. [Abstract] [PDF]  

JA Knight, L McClellan, and JK Staheli

Cerebrospinal fluid lipoperoxides quantified by liquid chromatography, and determination of reference values
Clin Chem 1990 36: 139-142. [Abstract] [PDF]  

RB Payne, AJ Little, and RT Evans

Albumin-adjusted calcium concentration in serum increases during normal pregnancy
Clin Chem 1990 36: 142-144. [Abstract] [PDF]  

GA Tetrault, WG Miller, and VM Chinchilli

Regional interlaboratory standardization of determinations of cholesterol, high-density lipoprotein cholesterol, and triglycerides
Clin Chem 1990 36: 145-149. [Abstract] [PDF]  

JR Delanghe, AM De Mol, ML De Buyzere, IK De Scheerder, and RJ Wieme

Mass concentration and activity concentration of creatine kinase isoenzyme MB compared in serum after acute myocardial infarction
Clin Chem 1990 36: 149-153. [Abstract] [PDF]  

T Suzuki, T Shiraishi, K Tomita, M Totani, and T Murachi

Monoclonal antibody inhibiting creatine kinase MM3 but not isoform MM1
Clin Chem 1990 36: 153-156. [Abstract] [PDF]  

JD Upton and P Hindmarsh

More pitfalls in human plasma amino acid analysis
Clin Chem 1990 36: 157-158. [PDF]  

E Mathieu, Y Gallois, ML Cortey, and J Marcais

Chemiluminescence immunoassay kit with acridinium-ester-labeled antibody for assay of choriogonadotropin in serum
Clin Chem 1990 36: 157. [PDF]  

AJ Krueger, JJ Yang, TA Roy, DJ Robbins, and CR Mackerer

An automated myeloperoxidase assay
Clin Chem 1990 36: 158. [PDF]  

L Pou Clave and F Campos Barreda

Analysis for sulfamethoxazole by "high-performance" liquid chromatography
Clin Chem 1990 36: 158-159. [PDF]  

JM Rattenbury, JR Bonham, JC Allen, and A Meeks

Appearance of vigabatrin (gamma-vinyl-gamma-aminobutyric acid, 4-amino- hex-5-enoic acid) in screening tests and analyses for amino acids
Clin Chem 1990 36: 159-160. [PDF]  

R Lavoie, B Levesque, and E Dewailly

Evaluation of an alveolar carbon monoxide analysis method
Clin Chem 1990 36: 160. [PDF]  

M Kimura, N Ogasahara, K Kobayashi, A Hitoi, A Matsuoka, and Y Kimura

Improvement in the head-space gas-chromatographic method for determination of three ketone bodies in plasma
Clin Chem 1990 36: 160-161. [PDF]  

WM Riley, C Tautu, G Verazin, J Gregory, S Josiah, JJ Prorok, and JA Alhadeff

Evaluation of sialic acid concentrations in serum for the diagnosis and staging of breast cancer
Clin Chem 1990 36: 161-162. [PDF]  

A Brock and V Brock

Inhibition of human alpha-amylases by cycloheptaamylose: a noncompetitive mechanism?
Clin Chem 1990 36: 162-163. [PDF]  

S Sugo, Y Matsumoto, T Yamaoka, and I Sakurabayashi

Improved enzymatic method for determining free fatty acids in serum, with use of 3-octenoic acid
Clin Chem 1990 36: 163. [PDF]  

J Reinsberg, A Heydweiller, U Wagner, K Pfeil, P Oehr, and D Krebs

Evidence for interaction of human anti-idiotypic antibodies with CA 125 determination in a patient after radioimmunodetection
Clin Chem 1990 36: 164-167. [Abstract] [PDF]  

Invited Reviewers—1989
Clin Chem 1990 36: 181-183. [PDF]  

the clinical chemist
Clin Chem 1990 36: 184-186. [PDF]  

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