Luteinizing hormone cross reaction
Other causes, such as menopause, ovulation and bilateral oophorectomy, can lead to increased luteinizing hormone, can also affect the blood hCG, resulting in increased hCG. Because of the same peptide chain composition of LH and hCG, the positive pregnancy test using anti-hcg antibody can be identified by monoclonal two-point enzyme immunoassay of hCG.
In recent years, it has been found that some malignant tumors, such as pancreatic cancer, gastric cancer, liver cancer, breast cancer, lung cancer and other blood hCG can also be increased, so hCG can be regarded as one of the cancer markers. But must combine the clinical situation and other examination result comprehensive analysis judgment.