Abstract | OBJECTIVE: STUDY DESIGN: A total of 213 serum samples from 39 patients with uneventful moles and 697 serum samples from 17 patients with low-risk and high-risk GTN were obtained and subsequently measured with both the hCG C-terminal (hCG- CTP) and DPC Immulite 2000 tests. RESULTS: In patients with uneventful moles and GTN, serum hCG levels recorded using the hCG- CTP and DPC Immulite 2000 tests correlated well (r2 = 0.936 and r2 = 0.958). However, the serum hCG titers measured using the DPC Immulite 2000 assay were approximately 2.5- and 2.7-fold higher than those measured with the hCG- CTP test (p < 0.0001) when lower titers of hCG (< 40 mIU/mL) were tested. In addition, 3 and 1 patient, respectivelyl, with uneventful mole and GTN obtained positive results with the DPC Immulite 2000 test (3.0-4.2 mIU/mL) after demonstrating undetectable hCG levels with the hCG- CTP test (< 1.0 mIU/mL). CONCLUSION: At the lower levels of hCG, a few discrepancies between hCG titers measured using the 2 commercial immunoassays arose and may be attributed to the existence of hCG-related molecules. However, these hCG metabolites disappeared rapidly, the clinical importance of which remains unclear.
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Authors | Hideo Matsui, Maki Kihara, Hirokazu Usui, Shinichi Tate, Akira Mitsuhashi, Makio Shozu |
Journal | The Journal of reproductive medicine
(J Reprod Med)
Vol. 54
Issue 10
Pg. 631-5
(Oct 2009)
ISSN: 0024-7758 [Print] United States |
PMID | 20677483
(Publication Type: Comparative Study, Journal Article)
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Chemical References |
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Topics |
- Chorionic Gonadotropin
(blood)
- Female
- Gestational Trophoblastic Disease
(diagnosis)
- Humans
- Immunoassay
(instrumentation)
- Pregnancy
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