Pregnancy test (blood test)

Why would I take this test?

If you miss a period after unprotected (or protected) sex, you may be pregnant. Pregnancy tests looks for hormone levels of human chorionic gonadotrophin (hCG), which increases exponentially after fertilisation. It is not always detected by a pee stick (urine test) before 13 to 16 days after your ovulation date, as the levels are low. However, a pregnancy blood test is more accurate and can pick up a positive result between 6 to 8 days after ovulation.

How a test is done?

Our phlebotomist will tie a rubber band to your upper arm to make the veins more visible. They will swab to clean the arm, then a sterile needle attached to a tube is gently inserted into the vein and the blood is drawn into a vial (or vials if more than one test has been requested). Only one needle is used regardless of the number of tests or vials requested. The needle is removed, a plaster applied, and it’s done. You might get a small bruise around the needle mark.

Please wear loose clothing (for easy access to your arm) and let us know a preferred arm.

You can continue to take regular medication but check with your doctor whether any of your medications may affect test results.

It's easier to draw blood when:

• you are hydrated – please drink some water, especially in hot weather and for morning blood draws

• you are warm – please keep warm before the test

Fasting is required

A fasting test means:

• nothing to eat or drink, other than water, for 8 hours before the test, unless advised otherwise by your clinician.

• no alcohol for 24 hours before the test, unless advised otherwise by your clinician.

• you can continue to take regular medication but check with your doctor whether any of your medications may affect test results

Can I have someone with me?

Of course, if that makes you more comfortable, you may have a friend or relative accompany you during a blood test.

When will I get my results?

Results returned in 24-48 hours

How do I get my results?

The certified laboratory report is emailed to us, and we can either:

• email directly to you

• email directly to you and/or to your GP. We will need your written consent to share any test results, but we will discuss this with you when you book your appointment

• give it to you in person at the clinic

We highly recommend you consult with your clinician to explain test results. They can also take into account your medical history and advise you on next steps.

Further information:

NHS pregnancy
NHS you and your pregnancy at 1 to 3 weeks