We provide low-cost blood testing kits to trans and non-binary people in the UK. The tests are delivered discreetly by post and can be taken at home (only requiring a fingerprick).
We currently test for:
We are working on including more in the near future.
We are co-creating research with the wider trans community to move the needle forward on trans healthcare. Our current areas of interest include:
Yes. Our tests are carried out using CE-marked kits provided by third party UKAS-accredited partner laboratories. Our role in the process is liaising with the laboratories (this includes negotiating prices) and handling the forwarding of results.
You poke your finger with a lancet and bleed into a small tube. That gets mailed to a lab and tested. The results are then sent back to you.
Yes. Recent studies have shown that fingerprick blood sampling is a reliable method for measuring hormone levels and liver function, typically returning results within 10% of traditional venous samples. Moreover, our partner labs are UKAS accredited, meaning that they meet the same rigorous standards as NHS labs and conduct regular internal quality control assessments.
Results typically arrive within 3 working days of posting your sample.
No, results should be interpreted by a medical professional such as a GP. Nothing on this site is medical advice.
Data security is a top priority at Sapphic Bison. We have implemented robust measures to protect all information handled through our services. These include secure email communications, encryption of sensitive data, and training for our team.
No, taking part in research is an opt-in process. Whether or not you choose to share your data for research purposes, we encourage you to visit our Research page to learn more about our work.