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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Clinica Chimica Actaarrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Clinica Chimica Acta
Article . 2009 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Qualitative point-of-care and over-the-counter urine hCG devices differentially detect the hCG variants of early pregnancy

Authors: Mark A, Cervinski; Christina M, Lockwood; Angela M, Ferguson; Randall R, Odem; Ulf H, Stenman; Henrik, Alfthan; David G, Grenache; +1 Authors

Qualitative point-of-care and over-the-counter urine hCG devices differentially detect the hCG variants of early pregnancy

Abstract

Qualitative point-of-care (POC) tests for human chorionic gonadotropin (hCG) vary in their ability to detect purified hCG variants and there is data to suggest that over-the-counter (OTC) devices might also display similar variability. This could potentially influence the detection of urine hCG in early pregnancy.Six OTC devices were tested for their ability to detect 5 hCG variants. Ten early pregnancy urine specimens were selected for their diverse expression of hCG variants. The samples were tested with 6 brands of POC and 6 OTC devices.OTC devices consistently recognized intact hCG, hCGn, and hCGbeta. hCGbetan was consistently recognized by 4 out of 6 brands. One brand inconsistently recognized hCGbetacf. OTC and POC devices varied greatly in their ability to detect hCG in early pregnancy urine, despite the fact that urine samples were adjusted to the same intact hCG concentration. Interestingly, we found that the OTC devices had better analytical sensitivity than the POC devices. Clinitest and First Response demonstrated the lowest hCG detection limits for POC and OTC devices, respectively.Both OTC and POC devices are capable of detecting hCG concentrations in early pregnancy urine, and OTC devices demonstrated better analytical sensitivity relative to POC devices.

Keywords

Time Factors, Pregnancy, Point-of-Care Systems, Humans, Female, Urinalysis, Chorionic Gonadotropin

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
43
Top 10%
Top 10%
Top 10%
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