Myocardial Markers of Injury: Evolution and Insights

JH Keffer - American journal of clinical pathology, 1996 - academic.oup.com
… , the three sources of reagents produced virtually interchangeable values reflecting the
advances in standardization of both the assays and the manufacturer methods (KefFer JH, …

Discriminating between iron deficiency anemia and anemia of chronic disease using traditional indices of iron status vs transferrin receptor concentration

FH Wians Jr, JE Urban, JH Keffer… - American journal of …, 2001 - academic.oup.com
We compared the ability of soluble serum transferrin receptor (TfR) concentration, quantified
using the R&D Systems (Minneapolis, MN) enzyme-linked immunosorbent TfR assay, with …

Preanalytical considerations in testing thyroid function

JH Keffer - Clinical chemistry, 1996 - academic.oup.com
Remarkable technical advances have permitted analytical measurement of thyrotropin (TSH)
and estimates of free thyroxine (FT4) with precision, accuracy, and favorable economics. …

Maternal cardiac troponin I levels during normal labor and delivery

SA Shivvers, FH Wians Jr, JH Keffer… - American journal of …, 1999 - Elsevier
Objective: Diagnosis of myocardial infarction in pregnant women on the basis of changes in
biochemical markers is complicated by the release of some of these markers from …

Cardiac troponin I measurement with the ACCESS® immunoassay system: analytical and clinical performance characteristics

…, RT McCormack, FH Wians Jr, JH Keffer… - Clinical …, 1998 - academic.oup.com
We evaluated the ACCESS ® cardiac troponin I (cTnI) immunoassay as a marker for
myocardial infarction (MI). Total imprecision was 6.0% to 13.5%, the minimum detectable …

Effects of repeated electrical defibrillations on cardiac troponin I levels.

JA Joglar, DJ Kessler, PJ Welch, JH Keffer… - The American journal …, 1999 - europepmc.org
Multiple endocardial countershocks applied during intraoperative endocardial implantable
cardioverter-defibrillator testing for the purpose of defibrillation threshold determination …

Comparison of cardiac troponin I and lactate dehydrogenase isoenzymes for the late diagnosis of myocardial injury

…, DJ Li, LB Baskin, I Jialal, JH Keffer - American journal of …, 1996 - academic.oup.com
… Li D, Jialal I, Keffer J. Greater frequency of increased cardiac troponin T than increased
cardiac troponin I in patients with chronic renal failure. Clin Chem 1996;42:114-115. …

Economic considerations of point-of-care testing.

JH Keffer - American Journal of Clinical Pathology, 1995 - europepmc.org
Point-of-care testing is a rapidly expanding trend. This review discusses some of the issues
driving the development of this new approach to laboratory testing, assesses the factors …

Effects of cocaine on cortisol secretion in humans

…, RW Snyder II, EJ Eichhorn, JH Keffer… - The American journal of …, 1995 - Elsevier
The effects of acute cocaine administration on the pituitary adrenal axis in humans without a
history of drug abuse are unknown. The authors studied 12 male volunteers twice in a …

Guidelines and algorithms: perceptions of why and when they are successful and how to improve them

JH Keffer - 2001 - academic.oup.com
Medicine is increasingly complex, a reality created by the explosion of knowledge during the
last 50 years. The cost of applying this knowledge creates a daunting economic challenge. …