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Rapid Urinary LH assay for Prediction of Ovulation
Author(s) -
Ho P. C.,
Kwan M.,
Chan S. Y. W.,
Chan P. H.,
Tang L. C. H.
Publication year - 1985
Publication title -
australian and new zealand journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.734
H-Index - 65
eISSN - 1479-828X
pISSN - 0004-8666
DOI - 10.1111/j.1479-828x.1985.tb00651.x
Subject(s) - urine , ovulation , luteinizing hormone , basal body temperature , radioimmunoassay , endocrinology , medicine , urinary system , immunoassay , chemistry , hormone , antibody , immunology
Summary: The results of the cervical mucus score (CMS), basal body temperature (BBT) and a rapid urine luteinizing hormone (LH) assay by haemagglutination immunoassay were compared with plasma LH radioimmunoassay in 28 ovulatory cycles. There was good correlation of the CMS peak with the plasma LH peak while the urine LH peak usually occurred one day later. The first day when the CMS was ≥ 8 occurred within ± 1 day of the plasma LH peak in 89.3% of cycles. The first day when the urine LH was ≥ 100 iu/1 occurred within ± 1 day of the plasma LH peak in all the cycles. BBT nadir could be identified in only 82% of cycles and it coincided with the plasma LH peak in only 28.6% of cases. These findings suggest that both the CMS and the rapid urine LH assay are acceptable methods for determining the time of ovulation while the BBT is not useful.