One Day Tests - Croydon Reviews 

I have now used One Day Tests twice, and both experiences have been outstanding. My most recent visit was to the Croydon clinic on 07/04/2026, and just like my first test at their Canary Wharf location at the end of 2025, the entire process was efficient, professional, and remarkably smooth. I had my blood test done in the morning and received my results the same evening, exactly as promised.

The staff at both branches have been consistently excellent – highly skilled, professional, and at the same time genuinely friendly and welcoming. The phlebotomists have a very light hand, making the blood draw almost painless, which really helps if you are at all nervous about needles. The clinics themselves are clean, well-organised, and run in a way that inspires confidence from the moment you walk in.

What really sets One Day Tests apart is their use of technology and the depth of information they provide with the results. After my most recent test, I discovered their AI feature, which goes through every single marker, clearly explaining what it means, highlighting any concerns, and offering sensible, easy‑to‑understand recommendations. All markers are also tracked over time across multiple tests, which is incredibly useful for monitoring health trends and sharing with healthcare professionals.

Overall, I would genuinely rate One Day Tests 11 out of 10. They deliver on speed, accuracy, professionalism, and patient care, and they have clearly invested in tools that help patients actually understand their health, not just receive a list of numbers. I sincerely hope this review reaches both the staff and management teams at Canary Wharf and Croydon, as they truly deserve recognition and praise for the service they provide.

Professional and empathetic staff, especially for someone with trypanophobia.

It was a great experience and was very professional.would recommend

I was very impressed with how quick the results came back and how clear the dashboard was. The results have identified clearly a vitamin deficiency that I can address easily now that I understand the root cause of my symptoms.

Had blood test at Croydon branch without appointment. Luckily I didn't have to wait, very friendly and kind staff as well as speedy service. Results came through very quickly and I had prompt response to my online enquiry. I would definitely use One Day Tests again.

Fantastic service and friendly staff with the very nice lady taking my one day test and excellent service and the results were sent to me fully within 48 hours I can both personally and highly recommended "One Day Tests"

Amazing service!

The professional who completed my blood test was extremely polite and accommodating when I arrived to my appointment much earlier than planned. I was seen almost immediately, the procedure was quick and not at all painful or uncomfortable, and I received the results the next day. I couldn’t ask for anything more

Kind people,quick results

Wanderfull service

Very impressive service with great, professional phlebotomist and the results really were incredibly fast. The dash board was very clear with useful reference values and explanations.
Will use again

Very polite and quick service and quick results

Helpful staff

Even though I was very late for the appointment- I was treated very respectfully and in no time had my blood drawn and was on my way. The results came through very quickly. Am excellent experience all round.

A very good experience .It wasn't a great start, because I opted to have the home test, and could not get enough of a sample. However, they were very helpful about it, and I ended up going to the clinic at Croydon to have a professional take the blood for an extra charge.
Very quick and efficient and kindly, and I got the results the next day (unexpectedly).

Friendly staff, quick turnaround for results, detailed explanation of results. One very happy customer. Will definitely use again for future checks.

Booking the test online was easy. The Phebotomist at Croydon Clinic was Toni, she was very patient, kind, gentle, I almost didn`t feel a thing when she drew the blood, she explained everything clearly. I got the results the same day. I was very pleased with the experience.

Very welcoming and friendly place. One Day Tests practitioner Toni was very helpful and made me feel at ease. Toni explained my test choices in detail and made me feel comfortable and relaxed. I received all my test results on the same day. The results are easy to read and understand. I would strongly recommend this place!

Excellent service - easy to set up the appointment. Professional, friendly and helpful service on the day of the in-person test. Clear, useful test results and feedback. I highly recommend.