Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
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Folate Blood Test (B12)

Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
Folate Blood Test (B12) - welzo
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Healthline_logo.svg_1 - welzo
metro_1 - welzo

Sale price £35.00
46 Reviews

A Folate Blood Test (B12) measures the amount of Vitamin B12 in your blood using a simple finger-prick process, from the comfort of your home.

Our kits are suitable for human use only and for adults aged 18+

Free next-day delivery
Results within 2 days
  • Folate Serum
Email when stocked
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The UK's Highest Rated Home Testing Provider

Online Influencer
Joanna Charice reviewed
"After using the Welzo Tiredness & Fatigue Blood Test due to ongoing tiredness, I found the testing process simple and the results came quickly. They revealed low iron levels. With this knowledge, I adjusted my diet and started iron supplements, which markedly improved my energy. This test was a key part in addressing my fatigue."
Assistant Athletic Trainer
Jordan Waits reviewed
"I simply ordered the test online, received it in the mail a few days later, and took the test in the comfort of my own home using a quick finger prick. The instructions were clear and easy to follow, and the process itself was quick and painless."
Health & Life Coach
Roxy Richards reviewed
"I followed the recommendations provided by Welzo, and I have to say, I feel so much healthier now. I have a lot more energy, and I just feel better overall. It's amazing how much of a difference small changes can make"
Online Influencer
Mimi Reviews reviewed
"The Welzo Female Hormone Test was a quick and effective way to shed light on my irregular periods. The results were clear and led to actionable insights, improving my discussions with my healthcare provider. Overall, a very positive experience."
  • Biomarkers
  • Information


Folate, folic acid or a vitamin B test checks for the serum levels of folate in the blood. Folate is essential in the healthy creation and regulation of your body's red blood cells. A typical folate rate is considered 2.7 to 17 nanograms per milliliter (ng/mL). A result lower than 2.7 ng/ml can mean you have a deficiency. 

Symptoms of a folate deficiency

Abnormally low vitamin B levels is often referred to as anaemia and can lead to unusually large red blood cells that cannot function correctly. A deficiency in folate or vitamin B can display itself with the following symptoms:

  • Fatigue
  • Ulcers
  • Weakness, especially in the muscles
  • Vision problems
  • May cause psychological issues such as depression and confusion
  • Reduce energy levels

Additional Information

Vitamin B12 is an important nutrient that helps keep your red blood cells healthy and your nervous system functioning properly. A lack of vitamin B12 can lead to anaemia and other serious health problems.

The B12 blood test is often recommended for people who have a history of anaemia, nerve damage, or other problems related to vitamin B12 deficiency. It can also help determine if someone is at risk for developing a deficiency.

The folate blood test is often recommended for pregnant women, people who have a history of anaemia, and people who have a history of miscarriage. It can also help determine if someone is at risk for developing a deficiency.

If you are planning to have a B12 blood test, be sure to tell your doctor if you are taking any supplements that contain vitamin B12. This will help ensure that the test results are accurate.

If your blood test results indicate that you have a deficiency, your doctor may recommend that you take supplements or make changes to your diet. Getting enough vitamin B12 is essential for good health, so it's important to follow your doctor's recommendations if you are diagnosed with a deficiency.

Vitamin B12 is found in many foods, including meat, poultry, fish, eggs, and dairy products. It is also added to some breakfast cereals and energy bars. If you are not sure if you are getting enough vitamin B12, talk to your doctor or a registered dietitian. They can help you create a diet that will meet your needs.

A folate blood test is a simple blood test that measures the level of folate in your blood. Folate is a water-soluble vitamin and is found naturally in many foods. It is also known as folic acid or vitamin B9.

Folate is important for the production of red blood cells and for the development of the neural tube. A lack of folate can lead to anaemia and other health problems.

Statistic on Folate Deficiency in the UK

Prevalence of Vitamin B12 deficiencies in the UK
According to the National Institute for Health and Care Excellence the prevalence of vitamin B12 deficiency is at 6% in those under the age of 60. This number then increases in individuals aged over 60. Diet factors also play a role, with vegans being twice as likely to have reduced B12 levels.
Of teenage girls are deficient in the B vitamin (folate)
NDNS (National Dietary and Nutrition Survey) found that 1 in 5 teenage girls were susceptible to a folate deficiency.

Experts Opinion on Folate Tests

"Folate is an important mineral that can lead to anaemia if levels are low. Low levels may be due to an immune disease or nutritional deficiency but can be easily corrected with tablets."

Dr Sameer Nakedar
Experts Opinion on Folate Tests

How to take a Folate Blood Test (B12) Test

Collecting a blood sample for your finger prick home test is straightforward. Watch the video below for more details on how to take a home blood test.

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    Pick your home test

    We have a wide range of tests to cover your health needs. Order with next day United Kingdom delivery and avoid sitting in a doctor's office or clinic. Use our quiz to find the right test for you.

  • how2 - welzo

    Take your test

    Activate your test and collect your sample in the morning. Return your sample on the same day, using the prepaid shipping label provided. Samples use a simple finger prick collection method that takes around 5 minutes to complete.

  • how3 - welzo

    Results within 48 hours

    You'll get verified results and insights into what the biomarkers mean. Order now to become a healthier you!

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Folate Blood Test (B12) Information

Specification of Folate Blood Test (B12)

  • Test name: Folate Blood Test (B12)
  • Also known as & related tests: Folic acid test, Vitamin B12, Folate assay, Serum folate and B12 test
  • Biomarkers: Folate Serum
  • Test tube: SST (Gold microtainer)
  • Brand: Welzo
  • Turn around time: Approx. 24 hours
  • Lab test ranges:
  • Test Kit Marking: MHRA/UKCA
  • Location of Lab: United Kingdom

What is a Folate Blood Test (B12)?

A Folate Blood Test (B12) is a home health test offered by Welzo. The Folate Blood Test (B12) can be taken from the comfort of your home using a finger prick sample, which is then sent back to our lab for analysis and interpretation.

What does a Folate Blood Test (B12) for? 

A Folate Blood Test (B12) tests for the following: Folate Serum.

What are the benefits of a Folate Blood Test (B12)?

Checking your health through the use of Folate Blood Test (B12) is an important way to track your health. Home testing offers the convenience of conducting health assessments in the comfort of your own home, while enabling quicker, more private results without the need for visiting a healthcare facility.

Can a GP review my Folate Blood Test (B12)?

Yes, Welzo offers a GP review service for the Folate Blood Test (B12). Follow the link if you would like to have an online GP appointment with your Folate Blood Test (B12).

Are Folate Blood Test (B12)s available on the NHS?

The NHS offers Folate Blood Test (B12)s subject to eligibility requirements, consultations and local guidelines.

Folate Blood Test (B12) Kit and Ordering

How can a Folate Blood Test (B12) be ordered?

A Folate Blood Test (B12) can be ordered online through Welzo's secure checkout. Select the Folate Blood Test (B12) and add the patient's name and details, then checkout for next-day delivery.

What is included in the Folate Blood Test (B12) test kit?

The Folate Blood Test (B12) contains the following items in the test kit:

  • 1 x UN3373 Test Kit for Biological Substances Category B (test kit design may vary from images displayed online depending on the test selected.
  • 1 x Free Return Label 
  • 1 x Finger Prick Lancet / Urine Sample Pouch or Swab (depending on the test ordered)
  • 1 x Cleansing Wipe/ Alcohol Swab
  • SST (Gold microtainer)

Folate Blood Test (B12) Biomarkers and Results

What biomarkers are tested for in a Folate Blood Test (B12)?

The Folate Blood Test (B12) checks for the following biomarkers: Folate Serum

What are the results ranges for a Folate Blood Test (B12)?

Folate Blood Test (B12) reference ranges vary based on age, sex, population sample and numeric test result ranges. However, once you complete your tests, you will receive clear reference ranges for your Folate Blood Test (B12).

What is a normal test range for Folate Blood Test (B12)?

The Folate Blood Test (B12) range will be provided on the advanced Welzo reporting panel which will factor in multiple aspects such as age, population size comparison and biological sex.

Folate Blood Test (B12) Procedure and Timing

When should a Folate Blood Test (B12) be taken?

It is best to take a Folate Blood Test (B12) first thing in the morning.

How long does a Folate Blood Test (B12) take?

The typical turnaround for a Folate Blood Test (B12) is 24 hours from receipt at the Welzo laboratory, Monday to Thursday. However, results may come back faster or slower depending on how busy the Welzo laboratory is and if you have requested any biomarkers that take longer to test for. In this case, results can take up to 5 days.

Are there any special preparations required before taking the Folate Blood Test (B12) (e.g., fasting)?

We will let you know via email if there are any special requirements for the Folate Blood Test (B12). However, typically we recommend you take a Folate Blood Test (B12) first thing in the morning, fasted.

What is the best time to post my Folate Blood Test (B12)?

The best time to return your Folate Blood Test (B12) sample is Monday to Thursday, before 14:00 to ensure the product arrives at our lab on time for same-day analysis.

What sample is required for a Folate Blood Test (B12)?

The Folate Blood Test (B12) requires a capillary blood sample using a SST (Gold microtainer) that is collected from a finger-prick blood sample.

Convenient and fast
Convenient and fast

Welzo health tests are shipped straight to your address the very next day.

Secure and accurate
Secure and accurate

We are a team of UK based doctors and scientists, making cutting edge analysis accessible.

24/7 Customer Support
24/7 Customer Support

We issue results 24/7, giving you personal insights into your body with support from our UK based admin and lab team.

Customer Reviews

Based on 5 reviews
Poppy Ball

The Folate-Blood-Test home health kit is incredibly convenient and user-friendly. The instructions were clear, making the process easy to follow. I received my accurate results promptly, which greatly helped in managing my health. Highly recommend for those who value convenience and quick results in health monitoring.

Kaylani Becker

The Folate Blood Test kit was easy to use with clear instructions. The results were delivered promptly and explained in a user-friendly manner. It was reassuring to monitor my health from the comfort of my own home. I highly recommend this for those interested in tracking their folate levels.

Abel Maclead

The customer service at is always helpful and friendly. I appreciate their willingness to answer my questions.

Meaghan Garufi

The Folate Blood Test was a smooth and efficient experience. The results were easy to understand and it provided valuable insight into my health. Highly recommend for anyone monitoring their folate levels!

Peri Miller

Folate Blood Test (B12)