Book a blood test appointment

Our clinics offer appointments Monday to Friday between 10 am and 4 pm. Some clinics also offer weekend appointments. 

Refer to our clinic finder to pick your preferred location. 

Some of our clinics are walk-in only, so you won't need to make an appointment before visiting. 

We recommend drinking lots of water the evening before and on the morning of your appointment. Hydration prevents dizziness and helps blood flow more easily when collecting your sample.

You might consider wearing loose-fitting sleeves — the trained medical practitioner will take a blood sample from inside your arm.

Fasting (not eating or drinking anything except water) helps you get the most accurate results. 

We recommend fasting if you’re testing the following health markers: 

• cholesterol profile
• apolipoproteins
• iron profile
• vitamin B9 (folate)
• testosterone

We recommend a morning appointment if you test your thyroid profile or testosterone levels. 

You must book an appointment before 11 am if your test includes testosterone — when your levels are most stable. 

1. Thriva venous test kit — this should arrive at your address within 2-3 working days once ordered, but it can be longer due to Royal Mail Strikes. We’ll keep you updated with any changes to your delivery date. Don’t open your test kit before your appointment.

2. Payment confirmation email with your customer reference number — our customer experience team will send this to you. You must show this email and bring your venous test kit to the appointment. The clinic won't be able to collect your sample without both of these. 

It’s rare, but this can sometimes result from dehydration, causing your blood vessels to constrict. This is why we recommend drinking lots of water before your appointment. It can also sometimes happen if you feel cold or have hard-to-find veins. 

If the healthcare professional can’t take your blood sample on the first go, they'll try a second time only if you’re comfortable. 

If it’s not possible to collect your sample on the second attempt, please contact our customer services team at venousbooking@thriva.co for advice on the next steps. 

If your venous kit hasn’t arrived within 10 business days of ordering, please contact venousbookings@thriva.co 

If your venous kit hasn’t arrived 48 hours before your appointment, please email your home visit provider to rearrange your appointment to avoid cancellation fees. The medical practitioner can’t take your sample without your venous test kit. 

Post your sample the same day you took it. If you can't do this, store it at room temperature and pop them in the post the next day.

Posting your sample back on a weekday (Monday to Friday) to avoid delays over the weekend is best.

Post your sample via your nearest priority postbox. These postboxes are collected most frequently.

We'll email you to let you know the lab has received your sample, and your results are ready to view online.  

You can book a home visit Monday to Friday between 8.30 am and 6 pm and Saturday to Sunday between 9 am and 5 pm. 

We recommend booking a weekday appointment to avoid delays in getting your results. 

We recommend drinking lots of water the evening before and on the morning of your appointment. Hydration prevents dizziness and helps blood flow more easily when collecting your sample.

You might consider wearing loose-fitting sleeves — the trained medical professional will take a blood sample from inside your arm.

1. Your Thriva venous test kit — should arrive at your address within 2-3 working days once ordered, but it can be longer due to Royal Mail Strikes. We’ll keep you updated with any changes to your delivery date. Don’t open your test kit before your appointment.

2. Payment confirmation email and customer reference number — our customer experience team will send this to you by email. The healthcare practitioner won't be able to collect your sample without these. 

Your healthcare practitioner needs your test kit to collect your sample.  

If your venous test kit hasn't arrived within 10 business days of ordering it, please email us at venousbooking@thriva.co 

If your venous kit hasn’t arrived 48 hours before your appointment, please email your home visit provider to rearrange your appointment. You must do this to avoid a cancellation fee. 

See our cancellation policy (below) for more details.

If you need to change or cancel your home visit, you must inform your provider 48 hours before your scheduled appointment.

If you fail to inform your home visit provider, you’ll be charged £65.00.

Late cancellations aren’t eligible for refunds. Any late change requests will incur the total cost of your appointment. 

No — the home visit provider will send your sample off in the post on the same day for you.