- Type: Blood
Pregnancy Blood Test (Beta hCG)
Laboratory test
Results by e-mail
Treatment available if needed
This pregnancy blood test is an accurate quantitative pregnancy blood test (beta-hCG).
Why do this test?
A blood pregnancy test is much more accurate than a urine test. It becomes positive 7-12 days after falling pregnant (conception) and is 99% reliable. A number of 5.8 IU/L or more is positive for pregnancy and gets higher during the course of the pregnancy reaching a maximum around 9-12 weeks before getting less for the rest of the pregnancy (see below). For this reason you can also use a pregnancy blood test to see how a pregnancy is progressing. It is therefore sometimes used to check for miscarriages.
A urine pregnancy test, on the other hand, is usually done when you have missed a period and is 97% accurate. That is why women sometimes do more than one test just to make sure. It usually becomes positive 2 weeks after getting pregnant (conception).
Click here to find out more in our ultimate guide to pregnancy tests.
Results:
Results take 1 working day * and will be e-mailed to you with a doctor's explanation.
* Indicative timings only. Actual result may be earlier or slightly later.
Beta-hCG Levels and Pregnancy:
Levels of beta-hCG less than 5.8 indicate a negative pregnancy test.
Levels of beta-hCG more than 5.8 indicate a positive pregnancy test.
| Beta-hCG (IU/L) | Pregnancy (Weeks) |
| 5.8 - 71.2 | 3 |
| 9.5 - 750 | 4 |
| 217 - 7138 | 5 |
| 158 - 31795 | 6 |
| 3697 - 163563 | 7 |
| 32065 - 149571 | 8 |
| 63803 - 151410 | 9 |
| 46509 - 186977 | 10 |
| 27832 - 210612 | 12 |
| 13950 - 62530 | 14 |
| 12039 - 70971 | 15 |
| 9040 - 56451 | 16 |
| 8175 - 55868 | 17 |
| 8099 - 58176 | 18 |
PREGNANCY GESTATIONAL CALCULATOR
Option 1: Calculate by Last Menstrual Period
Enter the first day of your last menstrual period:
Option 2: Calculate by Gestational Age from Ultrasound
Enter the gestational age (in weeks and days) as given by the ultrasound:
Enter the date of the ultrasound scan:
All laboratories need information regarding the client to uniquely identify their test sample.
Without these details, tests cannot be processed.
The minimum requirement is the full name, gender and date of birth.
You can enter these details securely at the top before you click 'Add to cart'.
1. Purchase test online with full name and date of birth.
2. Receive an email with either a request form and the address of our London Wimpole Street location, or a booking link to schedule your test at another location more convenient for you.
3. You will recieve a text message notification when your results are ready. They will be sent to you discreetly by email.
4. In the event of a positive test result, we provide STI treatment if needed.
Treatment for positive tests is available by payment of a £30 prescription fee.
A prescription token is then sent to you by email and SMS. You can take this to any pharmacy and have your medication dispensed. Typical pharmacy costs for one antibiotic is approximately £10-15 but can be more for certain antibiotics.
Pregnancy Blood Test (Beta hCG)