About HCG Blood Test - Quantitative
The quantitative HCG blood test is a medical test that measures the amount of human chorionic gonadotropin (hCG) hormone present in a blood sample. HCG is a hormone that is produced during pregnancy. The level of hCG in the blood indicates the age of the fetus. The test may also be done to detect certain pregnancy-related problems, such as ectopic pregnancy or molar pregnancy. The quantitative hCG blood test may also be used to diagnose non-pregnancy conditions that may involve increased levels of hCG hormone, such as testicular cancer in men.
The quantitative HCG blood test differs from the qualitative hCG blood test, which checks if hCG is present in the blood, but does not measure the actual level.
If needed, the healthcare provider or lab will provide specific instructions to prepare for the blood test. There usually are no specific instructions for preparing for a quantitative HCG blood test.
Wear clothing that makes it easy to access your arm for the blood test.
The quantitative HCG blood test involves collecting a blood sample to measure the level of the hCG hormone.
- A healthcare professional will start by wrapping an elastic band around your upper arm. This helps to stop the blood flow and makes the veins in your arm more visible.
- Once the veins are visible, the healthcare professional will clean the skin around one of the veins with alcohol. This ensures that the area is sterile before the needle is inserted.
- The healthcare professional will then insert a needle into the vein. To collect the blood, a tube is attached to the end of the needle. You may feel a brief stinging or pinching sensation when the needle is inserted. However, you may not feel anything at all. While the needle is in your vein, you may experience minor discomfort or stinging.
- Once enough blood has been collected, the elastic band is removed from your arm.
- As the needle is removed from your arm, cotton or gauze will be placed on the puncture site to apply pressure and prevent bleeding. It will be secured with a bandage. Afterward, you might experience some mild throbbing at the puncture site.
- There generally are no specific instructions for recovery after a quantitative HCG blood test. People can typically resume normal activities after the test. Contact the doctor for advice if the site where the needle was place becomes painful, swollen, severely bruised, or turns red.
The blood sample will then be sent to a laboratory for analysis to measure the level of hCG hormone in your blood. After analysis, the lab will send a report to the doctor, who will let you know about your results.
The doctor will explain the meaning of the results. Levels considered normal may differ depending on the laboratory. In addition, levels that are considered normal will differ between pregnant and non-pregnant people, and by length of the pregnancy (the number of pregnancy weeks).
Higher than expected levels may indicate multiple fetuses (for example, twins), certain types of tumors, or certain types of cancer (such as ovarian or testicular cancer).
Lower than expected levels may indicate miscarriage or ectopic pregnancy.
It is important to follow-up with the healthcare professional to understand your quantitative HCG blood test results. They can provide personalized guidance and interpretation of the test results for your individual situation.