The information on this site is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. All content, including text, graphics, images, and information, contained on or available through this website is for general information purposes only. The purpose of this is to help with education and create better conversations between patients and their healthcare providers.. Human chorionic gonadotropin. The presence of hCG is detected in some pregnancy tests ( HCG pregnancy strip tests ). Some cancerous tumors produce this hormone; therefore, elevated levels measured when the patient is not pregnant may lead to a cancer diagnosis and, if high enough, paraneoplastic syndromes, however,. A quantitative hCG test (or beta hCG) measures the amount of hCG actually present in the blood. Guideline to hCG levels during pregnancy hCG levels in weeks from LMP (gestational age) * :.