pregnancy test

'pregnancy test' can also refer to...

pregnancy test

pregnancy tests

pregnancy test

Urine Pregnancy Testing in Two Women with Cancer

OptiVol: an incidental pregnancy test

Cocaine Use during Pregnancy and Intrauterine Growth Retardation: New Insights Based on Maternal Hair Tests

Should Rapid Tests for Hiv Infection Now Be Mandatory During Pregnancy or In Labor?

The predictive value of ovarian reserve tests for spontaneous pregnancy in subfertile ovulatory women

A Prospective Cohort Study of Partner Testing for Herpes Simplex Virus and Sexual Behavior During Pregnancy

Evaluation of an FASD Prevention Campaign Using Pregnancy Test Dispensers in Alaska and the Yukon Ryan Ray

Testing of TSH during pregnancy to prevent preterm births: a budget-impact analysis for Austria Stefan Fischer

Prevalence and Accuracy of Screening Test of Asymptomatic Bacteriuria During Pregnancy in Siriraj Hospital

Challenges of Zika Virus Testing in Pregnancy in the Setting of Local Mosquito-Borne Transmission

Pregnancy: Prognostic models for the probability of achieving an ongoing pregnancy after in-vitro fertilization and the importance of testing their predictive value

Dynamics of urinary levels of hCG during early pregnancy and accuracy of the home pregnancy test

Added value of ovarian reserve testing on patient characteristics in the prediction of ovarian response and ongoing pregnancy: an individual patient data approach

Yeast vaginitis during pregnancy: susceptibility testing of 13 antifungal drugs and boric acid and the detection of four virulence factors

Commentary: Little evidence of effective prenatal treatment against congenital toxoplasmosis—the implications for testing in pregnancy

A feasibility study of a brief coping intervention (PRCI) for the waiting period before a pregnancy test during fertility treatment


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Any of several methods used to demonstrate whether or not a woman is pregnant. Most pregnancy tests are based on the detection of a hormone, human chorionic gonadotrophin (hCG), in the urine. The sample of urine is mixed with serum containing antibodies to hCG and marker particles (sheep red cells or latex particles) coated with hCG. In the absence of pregnancy, the antibodies will cause agglutination of the marker particles. If the urine is from a pregnant woman, the antibodies will be absorbed and no agglutination will occur. These tests may be positive for pregnancy as early as 30 days after the date of the last normal period and are 98% accurate. Newer tests using monoclonal antibodies (beta hCG) are more easily interpreted. When carried out on serum rather than urine, these tests give even earlier positive results.

Subjects: Medicine and Health.

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