G C Critchfield
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Explore the profile of G C Critchfield including associated specialties, affiliations and a list of published articles.
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17
Citations
71
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Recent Articles
1.
Frank T, Critchfield G
Clin Perinatol
. 2001 Aug;
28(2):395-406.
PMID: 11499060
In the past, all women with a family history of breast or ovarian cancer were considered to be at increased risk of cancer themselves. The discovery of BRCA1 and BRCA2...
2.
Bansal A, Critchfield G, Frank T, Reid J, Thomas A, Deffenbaugh A, et al.
Genet Test
. 2000 May;
4(1):45-8.
PMID: 10794360
Genetic testing for mutations in BRCA1 and BRCA2, two genes predisposing to breast and ovarian cancers, is available to women with a relevant family history. The aim of this study...
3.
4.
Critchfield G, Bennett S, Swaim W
Am J Clin Pathol
. 1996 Dec;
106(6):786-94.
PMID: 8980356
The International Normalized Ratio (INR) system for reporting the prothrombin time (PT) is essentially a calibration activity intended to standardize PT reporting across various reagent/instrument systems. However, complete standardization of...
5.
Critchfield G, Bennett S
Am J Clin Pathol
. 1994 Dec;
102(6):806-11.
PMID: 7801896
The International Normalized Ratio (INR) is a mathematical transformation of the prothrombin time (PT). The transformation requires a laboratory to compute the geometric mean of its own reference population. In...
6.
Bennett S, Critchfield G
J Clin Pathol
. 1994 Jul;
47(7):635-8.
PMID: 8089220
Aim: To evaluate the accuracy of the approximate linear formula of International Normalised Ratio (INR) imprecision by formal mathematical analysis. Methods: Using probability theory, an exact formula for the coefficient...
7.
Critchfield G, Bennett S
Am J Clin Pathol
. 1994 Jul;
102(1):115-22.
PMID: 8037157
The motivation behind the creation of the International Normalized Ratio (INR) was to improve interlaboratory comparison for patients on anticoagulation therapy. In principle, a laboratory that reports the prothrombin time...
8.
Critchfield G, Wilkins D, Loughmiller D, Davis B, Rollins D
J Anal Toxicol
. 1993 Mar;
17(2):69-72.
PMID: 8492569
We hypothesized that an antibody-mediated interference could arise in a homogeneous immunoassay used to determine the presence of cocaine metabolites in urine. Urine specimens containing benzoylecgonine (BE) at concentrations near...
9.
Critchfield G, Wilkins D, Loughmiller D, Rollins D
J Anal Toxicol
. 1992 Mar;
16(2):125-31.
PMID: 1501462
An important aspect in the evaluation of toxicologic assay methodology is the assessment of calibration. This paper presents a new approach for validating calibration using bootstrap analysis. The technique is...
10.
Evans M, Bottoms S, Critchfield G, Greb A, LaFerla J
Int J Gynaecol Obstet
. 1990 Jan;
31(1):25-8.
PMID: 1968013
Determinants of patients' decisions to have prenatal diagnosis, and by which test (amniocentesis or chorionic villus sampling), is not well understood. We have administered questionnaires to couples referred for genetic...