This is an important test that is typically used to monitor foetal health in pregnant women.

Venous blood
1 tests included
5 days turnaround



About Oestriol

What is oestriol?

Oestriol is one of the three main naturally produced oestrogen hormones, along with oestradiol and oestrone. It is typically present in very low concentrations for most of a woman’s life, increasing drastically in the placenta during pregnancy. Free oestriol levels can be used as an indicator of foetal health, with lower than normal blood levels during pregnancy potentially indicating a chromosome disorder such as Down’s Syndrome.

Why take the test?

This test measures the level of oestriol in the blood. It is typically used to monitor foetal health in pregnant women.


What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.