CIRCULATING LEVELS OF PREGNANCY SPECIFIC beta1 GLYCOPROTEIN IN LATE PREGNANCY: NYCTOHEMERAL AND DAY-TO-DAY VARIATION, AND VARIATION DURING LABOUR

Abstract
Circulating levels of pregnancy-specific beta 1 glycoprotein have been determined in a number of physiological situations in late pregnancy. The apparent variation in five subjects studied over a 24-hour period was not in excess of that due to the assay. Excess variation was apparent in 2 of 11 subjects studied daily for up to 8 days, and in 6 of 16 patients studied serially during labour.
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