Editorials:

Robert H. Wasserman

Strontium as a Tracer for Calcium in Biological and Clinical Research
Clin Chem 1998 44: 437-439. [Full Text] [PDF]  

Reviews:

Normand Després and Andrew M. Grant

Antibody interference in thyroid assays: a potential for clinical misinformation
Clin Chem 1998 44: 440-454. [Abstract] [Full Text] [PDF]  

Molecular Pathology and Genetics:

Cecilia Williams, Torbjörn Norberg, Afshin Ahmadian, Fredrik Pontén, Jonas Bergh, Mats Inganäs, Joakim Lundeberg, and Mathias Uhlén

Assessment of sequence-based p53 gene analysis in human breast cancer: messenger RNA in comparison with genomic DNA targets
Clin Chem 1998 44: 455-462. [Abstract] [Full Text] [PDF]  

Catarina G. Costa, Lambertus Dorland, Ulbe Holwerda, Isabel Tavares de Almeida, Bwee-Tien Poll-The, Cornelis Jakobs, and Marinus Duran

Simultaneous analysis of plasma free fatty acids and their 3-hydroxy analogs in fatty acid ß-oxidation disorders
Clin Chem 1998 44: 463-471. [Abstract] [Full Text] [PDF]  

Jean-Luc Gala, Michel Heusterspreute, Sylvain Loric, France Hanon, Bertrand Tombal, Paul Van Cangh, Paul Philippe De Nayer, and Marianne Philippe

Expression of prostate-specific antigen and prostate-specific membrane antigen transcripts in blood cells: implications for the detection of hematogenous prostate cells and standardization
Clin Chem 1998 44: 472-481. [Abstract] [Full Text] [PDF]  

Belinda A. J. Giesendorf, Jacqueline A. M. Vet, Sanjay Tyagi, Ewald J. M. G. Mensink, Frans J. M. Trijbels, and Henk J. Blom

Molecular beacons: a new approach for semiautomated mutation analysis
Clin Chem 1998 44: 482-486. [Abstract] [Full Text] [PDF]  

Enzymes and Protein Markers:

Gaelle Ferrieres, Charles Calzolari, Jean-Claude Mani, Daniel Laune, Sylvie Trinquier, Michel Laprade, Catherine Larue, Bernard Pau, and Claude Granier

Human cardiac troponin I: precise identification of antigenic epitopes and prediction of secondary structure
Clin Chem 1998 44: 487-493. [Abstract] [Full Text] [PDF]  

Robert H. Christenson, Show-Hong Duh, L. Kristin Newby, E. Magnus Ohman, Robert M. Califf, Christopher B. Granger, Steven Peck, Karen S. Pieper, Paul W. Armstrong, Hugo A. Katus, Eric J. Topol for the, and GUSTO-IIa Investigators

Cardiac troponin T and cardiac troponin I: relative values in short-term risk stratification of patients with acute coronary syndromes
Clin Chem 1998 44: 494-501. [Abstract] [Full Text] [PDF]  

Gerhard Küllertz, Sabine Lüthe, and Gunter Fischer

Semiautomated microtiter plate assay for monitoring peptidylprolyl cis/trans isomerase activity in normal and pathological human sera
Clin Chem 1998 44: 502-508. [Abstract] [Full Text] [PDF]  

Sheryl Harvey, Michael Weisman, James O'Dell, Tonya Scott, Mindy Krusemeier Jill Visor, and Cathy Swindlehurst

Chondrex: new marker of joint disease
Clin Chem 1998 44: 509-516. [Abstract] [Full Text] [PDF]  

Lipids and Lipoproteins:

Takashi Miida, Hideaki Otsuka, Atsushi Tsuchiya, and Masahiko Okada

Plasma lipoprotein profiles change significantly during cardiac catheterization
Clin Chem 1998 44: 517-521. [Abstract] [Full Text] [PDF]  

Hiroyuki Sugiuchi, Tetsumi Irie, Yoshinori Uji, Tomohiro Ueno, Toshiko Chaen, Kaneto Uekama, and Hiroaki Okabe

Homogeneous assay for measuring low-density lipoprotein cholesterol in serum with triblock copolymer and -cyclodextrin sulfate
Clin Chem 1998 44: 522-531. [Abstract] [Full Text] [PDF]  

Drug Monitoring and Toxicology:

Marc J. M. Nickmilder, Dominique Latinne, Jean-Paul De Houx, Roger K. Verbeeck, and Georges J. J. Lhoëst

Isolation and identification of a C₃₉ demethylated metabolite of rapamycin from pig liver microsomes and evaluation of its immunosuppressive activity
Clin Chem 1998 44: 532-538. [Abstract] [Full Text] [PDF]  

Mingsheng Ma and X. Chris Le

Effect of arsenosugar ingestion on urinary arsenic speciation
Clin Chem 1998 44: 539-550. [Abstract] [Full Text] [PDF]  

Thierry Dervieux and Roselyne Boulieu

Simultaneous determination of 6-thioguanine and methyl 6-mercaptopurine nucleotides of azathioprine in red blood cells by HPLC
Clin Chem 1998 44: 551-555. [Abstract] [Full Text] [PDF]  

Lambert H. J. Lambooy, Peter A. J. Leegwater, Lambert P. van den Heuvel, Jos P. Bökkerink, and Ronney A. De Abreu

Inhibition of DNA methylation in malignant MOLT F4 lymphoblasts by 6-mercaptopurine
Clin Chem 1998 44: 556-559. [Abstract] [Full Text] [PDF]  

Sébastien Bolze and Roselyne Boulieu

HPLC determination of ketamine, norketamine, and dehydronorketamine in plasma with a high-purity reversed-phase sorbent
Clin Chem 1998 44: 560-564. [Abstract] [Full Text] [PDF]  

Endocrinology and Metabolism:

Michael Landt, Ronald L. Gingerich, Peter J. Havel, Wendy M. Mueller, Bridgette Schoner, John E. Hale, and Mark L. Heiman

Radioimmunoassay of rat leptin: sexual dimorphism reversed from humans
Clin Chem 1998 44: 565-570. [Abstract] [Full Text] [PDF]  

Lynley K. Lewis, Mary W. Smith, Timothy G. Yandle, A. Mark Richards, and M. Gary Nicholls

Adrenomedullin(1–52) measured in human plasma by radioimmunoassay: plasma concentration, adsorption, and storage
Clin Chem 1998 44: 571-577. [Abstract] [Full Text] [PDF]  

Anne Caillot-Augusseau, Marie-Héléne Lafage-Proust, Claude Soler, Josiane Pernod, Francis Dubois, and Christian Alexandre

Bone formation and resorption biological markers in cosmonauts during and after a 180-day space flight (Euromir 95)
Clin Chem 1998 44: 578-585. [Abstract] [Full Text] [PDF]  

Giuseppe Vezzoli, Ivano Baragetti, Simona Zerbi, Andrea Caumo, Laura Soldati, Piera Bellinzoni, Antonella Centemero, Alessandro Rubinacci, GianLuigi Moro, and Giuseppe Bianchi

Strontium absorption and excretion in normocalciuric subjects: relation tocalcium metabolism
Clin Chem 1998 44: 586-590. [Abstract] [Full Text] [PDF]  

Automation and Analytical Techniques:

Nghia H. Chiem and D. Jed Harrison

Microchip systems for immunoassay: an integrated immunoreactor with electrophoretic separation for serum theophylline determination
Clin Chem 1998 44: 591-598. [Abstract] [Full Text] [PDF]  

Jacques Bienvenu, Maria Stella Graziani, François Arpin, Hélène Bernon, Cynthia Blessum, Cristina Marchetti, Gabriella Righetti, Manuela Somenzini, Gioacchino Verga, and Francesco Aguzzi

Multicenter evaluation of the Paragon CZE^TM 2000 capillary zone electrophoresis system for serum protein electrophoresis and monoclonal component typing
Clin Chem 1998 44: 599-605. [Abstract] [Full Text] [PDF]  

Narayanan Ramamurthy, Narayan Baliga, Joyce A. Wahr, Ulrich Schaller, Victor C. Yang, and Mark E. Meyerhoff

Improved protamine-sensitive membrane electrode for monitoring heparin concentrations in whole blood via protamine titration^§
Clin Chem 1998 44: 606-613. [Abstract] [Full Text] [PDF]  

Laboratory Management:

Paul F. H. Franck, Gerard Steen, Arnold J. P. F. Lombarts, John H. M. Souverijn, and Robert K. A. van Wermeskerken

Multicenter harmonization of common enzyme results by fresh patient-pool sera
Clin Chem 1998 44: 614-621. [Abstract] [Full Text] [PDF]  

Paul S. Horn, Amadeo J. Pesce, and Bradley E. Copeland

A robust approach to reference interval estimation and evaluation
Clin Chem 1998 44: 622-631. [Abstract] [Full Text] [PDF]  

Andrea Mosca, Renata Paleari, Alessandro Madè, Carlo Ferrero, Massimo Locatelli, and Ferruccio Ceriotti

Commutability of control materials in glycohemoglobin determinations
Clin Chem 1998 44: 632-638. [Abstract] [Full Text] [PDF]  

General Clinical Chemistry:

Henk J. Huijgen, Renata Sanders, Rudolf W. van Olden, Marjolein G. Klous, Faryal R. Gaffar, and Gerard T. B. Sanders

Intracellular and extracellular blood magnesium fractions in hemodialysis patients; is the ionized fraction a measure of magnesium excess?
Clin Chem 1998 44: 639-648. [Abstract] [Full Text] [PDF]  

Ellen G. H. M. van den Heuvel, Theo Muys, Hillie Pellegrom, Joost P. Bruyntjes, Wim van Dokkum, Steven Spanhaak, and Gertjan Schaafsma

A new method to measure iron absorption from the enrichment of ⁵⁷Fe and ⁵⁸Fe in young erythroid cells
Clin Chem 1998 44: 649-654. [Abstract] [Full Text] [PDF]  

Niels Fogh-Andersen and Paul D'Orazio

Proposal for standardizing direct-reading biosensors for blood glucose
Clin Chem 1998 44: 655-659. [Abstract] [Full Text] [PDF]  

Technical Briefs:

Shiu Chuen Wong and Tar Choon Aw

Hb E_1c as an Indicator for the Presence of Hb AE Phenotype in Diabetic Patients
Clin Chem 1998 44: 660-662. [Full Text] [PDF]  

M. Antònia Vilaseca, Dolores Moyano, Rafael Artuch, Imma Ferrer, Mercè Pineda, Esther Cardo, Jaume Campistol, Carles Pavia, and José-Antonio Camacho

Selective Screening for Hyperhomocysteinemia in Pediatric Patients
Clin Chem 1998 44: 662-664. [Full Text] [PDF]  

Mahesh Mathrubutham, Srinivasa K. Rao, Natasha R. Shah, and Jon R. Cohen

Plasma Elastase Activity Inhibition—A Microassay
Clin Chem 1998 44: 664-666. [Full Text] [PDF]  

Theo P. J. Mulder, Maarten F. C. M. Knapen, Marius J. van der Mooren, Pierre D. Demacker, Eva-Maria Roes, Eric A. P. Steegers, and Wilbert H. M. Peters

Effects of Hormone Replacement Therapy on Plasma Glutathione S-Transferase A1-1 Concentrations in Healthy Postmenopausal Women
Clin Chem 1998 44: 666-667. [Full Text] [PDF]  

Alain Lavoinne and Guy Hue

Serum Cardiac Troponins I and T in Early Posttraumatic Rhabdomyolysis
Clin Chem 1998 44: 667-668. [Full Text] [PDF]  

Francesco Zoppi and Christina Cristalli

Ionized Magnesium in Serum and Ultrafiltrate: pH and Bicarbonate Effect on Measurements with the AVL 988-4 Electrolyte Analyzer
Clin Chem 1998 44: 668-671. [Full Text] [PDF]  

Linda M. Thienpont and André P. De Leenheer

Efforts by Industry Toward Standardization of Serum Estradiol-17ß Measurements
Clin Chem 1998 44: 671-674. [Full Text] [PDF]  

Patrick Lionel Mark Lynch, John Savory, and Doris Mather Haverstick

Urine Total Protein Measurement with the Vitros Dry Reagent Technology: Modification of Diluent to Resolve Positive Bias of Diluted Samples
Clin Chem 1998 44: 674-675. [Full Text] [PDF]  

Atsushi Nishiyori, Katsuhiro Fukuda, Itsuro Ogimoto, and Hirohisa Kato

Detection of ADH2¹ and ADH2² Alleles in Fingernails from Japanese
Clin Chem 1998 44: 675-676. [Full Text] [PDF]  

Pierre Berteau, Frédéric Dumas, Jean-Luc Gala, Pascal Eschwège, Bernard Lacour, Marianne Philippe, and Sylvain Loric

Influence of Blood Storage and Sample Processing on Molecular Detection of Circulating Prostate Cells in Cancer
Clin Chem 1998 44: 677-679. [Full Text] [PDF]  

José A. Navarro-Gonzálvez, Cristina García-Benayas, and Joaquín Arenas

Semiautomated Measurement of Nitrate in Biological Fluids
Clin Chem 1998 44: 679-681. [Full Text] [PDF]  

Moshe Manor, Isaac Blickstein, Ynon Hazan, Orna Flidel-Rimon, and Zion J. Hagay

Postpartum Determination of Umbilical Artery Blood Gases: Effect of Time and Temperature
Clin Chem 1998 44: 681-683. [Full Text] [PDF]  

Maria Luisa Gozzo, Giuseppe Noia, Giuliano Barbaresi, Luigi Colacicco, Maria Annunziata Serraino, Maria Annunziata Marco De Santis, Silvio Lippa, Cinzia Callà, Alessandro Caruso, Salvatore Mancuso, and Bruno Giardina

Reference Intervals for 18 Clinical Chemistry Analytes in Fetal Plasma Samples Between 18 and 40 Weeks of Pregnancy
Clin Chem 1998 44: 683-685. [Full Text] [PDF]  

Klaus Jung, Philipp von Klinggräff, Brigitte Brux, Pranav Sinha, Dietmar Schnorr, and Stefan A. Loening

Preanalytical Determinants of Total and Free Prostate-Specific Antigen and Their Ratio: Blood Collection and Storage Conditions
Clin Chem 1998 44: 685-688. [Full Text] [PDF]  

Robert S. Rosenson, Beth A. Staffileno, and Christine C. Tangney

Effects of Tourniquet Technique, Order of Draw, and Sample Storage on Plasma Fibrinogen
Clin Chem 1998 44: 688-690. [Full Text] [PDF]  

Letters to the Editor:

Dimitrios N. Melegos and Eleftherios P. Diamandis

Is Prostate-Specific Antigen Present in Female Serum?
Clin Chem 1998 44: 691-692. [Full Text] [PDF]  

Erin L. Fieler, Daniel E. Coleman, and Randall C. Baselt

-Hydroxybutyrate Concentrations in Pre- and Postmortem Blood and Urine
Clin Chem 1998 44: 692. [Full Text] [PDF]  

William A. Sadler

Joint Limiting Values of N, Mean, and SD
Clin Chem 1998 44: 692-693. [Full Text] [PDF]  

Renata Fatio, Gabor Sütsch, Patrick Pei, Ferenc Follath, and Wolfgang Kiowski

FPIA and EMIT Methods Compared for Cyclosporine Monitoring in Heart Transplant Patients
Clin Chem 1998 44: 693-694. [Full Text] [PDF]  

Gill Rumsby and Colin Samuell

Availability of Assays for Definitive Diagnosis of Primary Hyperoxaluria Types 1 and 2
Clin Chem 1998 44: 694. [Full Text] [PDF]  

Daylily S. Ooi and Ludwig Jakobi

Cautionary Note Regarding Urinary Calculi Analysis with the Merckognost^® Kit • A spokesperson from Merck responds:
Clin Chem 1998 44: 694-696. [Full Text] [PDF]  

Pradip Datta and Amitava Dasgupta

Cross-Reactivity of Fosphenytoin in Four Phenytoin Immunoassays
Clin Chem 1998 44: 696-697. [Full Text] [PDF]  

The Clinical Chemist:

The Clinical Chemist
Clin Chem 1998 44: 698-702. [Full Text] [PDF]  

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