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However, normal and occasionally higher than normal values were observed in a few cases. Serum HPL level alone is of some clinical use in the diagnosis of hydatidiform mole. When combined with human chorionic gonadotropin (HCG), a low HPL\/HCG ratio for the corresponding period of amenorrhoea is a useful index in the diagnosis of hydatidiform mole.<\/jats:p>","DOI":"10.3109\/00016347609158523","type":"journal-article","created":{"date-parts":[[2009,12,8]],"date-time":"2009-12-08T18:06:42Z","timestamp":1260295602000},"page":"407-412","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Serum Human Placental Lactogen (HPL) Levels in Patients with Intact Hydatidiform Mole"],"prefix":"10.1111","volume":"55","author":[{"given":"Y. C.","family":"Lim","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S. 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