Thyroid Stimulating Hormone Blood Test

The Thyroid Stimulating Hormone (TSH) Blood Test helps to indicate whether your thyroid is overactive (hyperthyroidism) or underactive (hypothyroidism). It does this by detecting TSH, which stimulate the production of two more hormones (T3 and T4) which control your metabolism. This test, often combined with further thyroid hormone testing, can help to diagnose thyroid disorders and monitor general thyroid activity.


Why test for TSH?

Common reasons for this blood test are:

  • To monitor the effect of treatments for hyper- and hypothyroidism
  • To diagnose a thyroid disorder if you’re experiencing associated symptoms
  • To help evaluate the function of your thyroid.

Your blood test

Our phlebotomy-trained professionals will take a blood sample from you. This sample will be analysed in the UK by our authorised partners, TDL. By booking this blood test, you agree for us to share your personal information with TDL in order to process your test. We’ll make sure you consent to this at your appointment too.

Frequently Asked Questions

No, we will send you the results and recommend that you share these with your GP or fertility provider.

It is not unusual for some bleeding to occur under the skin following your blood test and sometimes this can extend a little further around the puncture site.  If this causes you concern, check with your practice nurse. 

Sometimes we cannot get a blood sample from you. This can be for many reasons, such as not being hydrated enough, feeling cold or having another blood test recently. We will always offer you another appointment so we can try again.

Visit our FAQs page for any further questions you may have.