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.. 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) * :. Beta hCG is considered a , which means it’s a substance that’s excreted by some kinds of tumors. That’s why, in some cases, the hCG blood test may also be used to evaluate and manage certain .