Had my first Quantative HCG blood test today... basically it tells you how much HCG you have(hormone that only exists in your blood when pregnant) - the levels should basically double every 48 hours or so in early pregnancy and they continue to rise until about the 10th week of pregnancy... it is just an early indicator that the pregnancy is progressing. Do I need this blood test - NO. But it sure does put my mind at ease and gives me a "goal" to focus on every week until we have our 8 week ultrasound.
My doctor posted my results and dropped me a little note and they were 698 - she said "it looks good!"