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Venous draw instructions (Superdrug)

How to prepare for a venous blood draw with Superdrug


Your test kit should include the following items

  • 1 x Needle
  • 1 x Register your Kit QR code
  • Collection vial(s)
  • 1 x Clear sample returns bag with absorbent pad
  • 1 x Plaster
  • 1 x Alcohol swab
  • 1 x Cleansing wipe 
  • Vial labels(s)
  • 1 x Returns envelope with label
  • 1 x Lab requisition form
  • 1 x Anti-tamper seal



It is advised to take and post the test earlier in the week (Mon-Thurs is ideal) to ensure the sample is as fresh as possible for the lab.

If you have purchased a Wellness 360 Female, Sex Hormone Complete Female or Fertility + Hormone testing kit for the most accurate result aim to take your test between day 19-21 of a cycle.

If your test contains the Prostate-Specific Antigen (PSA) marker please be aware that
for the most accurate results men should not have:

  • An active urinary infection (or have had one within the previous 6 weeks)
  • Ejaculated in the previous 48 hours
  • Exercised vigorously, for example cycling in the previous 48 hours
  • Had a urological intervention such as prostate biopsy in the previous 6 weeks


Register your kit online

Before you return your kit, it is important to register it to your Omnos account.If your kit is not registered our lab will be unable to process your sample.
Visit https://app.omnos.me/register

In order to get the most accurate results you should fast for 8 hours in advance of taking the test. The easiest time to do this is in the morning, having fasted overnight.

You should also avoid caffeine for 12 hours and alcohol for 36 hours in advance of the test.

Make sure you're hydrated 
Drink at least 500ml of plain water 1-2 hours prior to taking the test and 2-3l extra the day before the test as hydration can affect your results and how well blood will flow. 

Stay warm
Make sure to keep warm prior to your blood test as this will help to speed up the procedure.

On day of taking the test 
When you attend the clinic you must take your Omnos test kit with you (including the lab requisition form containing your unique Barcode ID) as Superdrug do not provide this. You will also be required to take photographic ID to confirm you are the person who made the booking.

Please ensure the components in your test kit are kept sealed prior to the appointment to ensure they are sterile.


To book your appointment please call Superdrug’s Service Line on 03333 111007 or 
visit https://healthclinics.superdrug.com/clinics

You can find your nearest clinic by adding your postcode, click on the clinic closest to you to book online.

Booking by phone:

If booking by telephone, please advise the agent that you wish to book a venous blood draw with a blood test kit provided by Omnos. They will offer you options for availability and you may be asked to provide them with the barcode ID from your Omnos test so please have this to hand. 

Booking online:

  1. Select Book An Appointment
  2. Select your preferred Superdrug Clinic
  3. Scroll down to Venous Sample Collection and choose “Pre-paid venous sample collection”. If this option is not available please look at alternative location or contact support@omnos.me for advice
  4. Select a date and time that suits from the availability shown
  5. Complete your Contact Information (or skip to step 7 if you have already completed this)
  6. Confirm your email address via the automatic email sent from Superdrug
  7. Click on the blue box that says Venous sample collection and select Omnos from the list of providers (you may need to scroll to the right to see Omnos depending on your browser window)
  8. Click on Confirm Booking.
You will then receive a booking confirmation email from Superdrug. 


Once your sample has been processed you will receive an email confirming your results are ready to be viewed on your account. This is usually within 3-5 days of the lab receiving the sample. 

If there are any issues with your sample we will be in touch.


Q. Do I need to stop taking medicines /supplements to take the blood test?
A. For the most accurate results you should refrain from taking any supplements 48 hrs prior to taking the test.

If you are on prescription medication we do not make any recommendation other than to check with your own doctor.

Q. What is the best time in my cycle to take a Wellness 360 Female, Sex Hormone
Complete Female or Fertility + Hormone test?

A. The optimum time to take test would be between days 19—21 of your cycle.

Q.Will taking HRT affect my results?
A. HRT that has been prescribed to balance out estrogen is unlikely to affect the results.

Q. Should I refrain from consuming caffeine or alcohol?
A. For the most accurate results you should avoid caffeine for 12 hours and alcohol for 36
hours in advance of the test.