Folate (Serum)

Measures folate levels essential for healthy blood cells, energy, and pregnancy support. Low levels may cause fatigue, weakness, or mood changes. A simple test that supports overall wellbeing.
- Description
- Why This Test?
- Associated Conditions
- Uses of This Test
The Folate (Serum) blood test measures folate levels to provide insight into nutritional status and support investigation of folate deficiency or excess. Folate is a B-vitamin involved in essential processes such as cell growth and maintenance, and it plays an important role in red blood cell production and healthy tissue function.
Checking folate levels can be helpful when symptoms suggest possible deficiency, when nutritional intake may be limited, or when absorption may be affected. It is also commonly used in wider health screening, particularly where anaemia is suspected or where folate status is clinically important for pregnancy-related health.
Folate is essential for:
- Red blood cell production
- DNA synthesis and repair
- Cell growth and division
- Healthy foetal development during pregnancy
When folate levels are low, the body may produce red blood cells that are unusually large and function less effectively. This can lead to megaloblastic anaemia, which may contribute to symptoms such as fatigue, weakness, and reduced stamina.
Folate deficiency can also reflect broader nutritional or absorption issues and may be associated with ongoing digestive conditions or lifestyle factors. Measuring folate provides an objective marker to support diagnosis, treatment, and monitoring of nutritional status.
Folate Deficiency
Low folate levels that may contribute to anaemia, fatigue, and reduced cell production and repair.
Megaloblastic Anaemia
A form of anaemia where red blood cells become abnormally large, commonly linked to folate deficiency (and sometimes vitamin B12 deficiency).
Malabsorption Disorders
Conditions that impair nutrient absorption (such as coeliac disease or inflammatory bowel disease), which can lead to low folate levels.
Pregnancy Complications (folate-related risk)
Low folate during early pregnancy is associated with increased risk of neural tube defects in foetal development.
- Investigate unexplained fatigue or weakness
- Assess suspected nutritional deficiency
- Support investigation of anaemia
- Check folate status in pregnancy planning
- Assess malabsorption-related nutrient deficiency
- Monitor folate supplementation levels
What We Test
Biomarkers analysed by accredited UK laboratories
Biomarker Tested
Vitamins
- Folate
Relevant for identifying folate deficiency or excess and supporting investigation of megaloblastic anaemia, fatigue, and pregnancy-related folate requirements.
- Folate
In-Clinic Blood Testing At Longridge, Preston
If you’d rather leave everything to a qualified professional, our in-clinic blood testing service is the most comfortable and hands-off experience. Once you complete your order, we’ll contact you to arrange a convenient appointment time.
Your sample will be taken by a trained phlebotomist, making the process quick, smooth, and reassuring - especially if you’re nervous around blood or struggle with finger-prick tests.
We send off all samples the same day to the lab to be processed so results can be expected within 72 hours.
Why Use This Service:
Hands-off, professional experience
High-quality samples for complex tests
No risk of “not enough sample”
Support at every step
No posting or packaging required
Convinient appointment times
Taking Charge Of Your Own Health Has Never Been Easier
Worried about your wellbeing?
If you’re experiencing unexplained symptoms such as fatigue, weight loss, or other issues, a comprehensive blood test may be the key to discovering potential underlying health problems.

Need to monitor a health condition?
Blood tests offer essential insights into various aspects of your health, from detecting deficiencies to evaluating immune functions.

Enhancing Performance and Fitness?
Whether you’re training for a sport or keeping track of your fitness progress, a blood test serves as an excellent foundation for your performance improvement journey.

All Our Tests Include:
No GP Referral
Order directly - no waiting for appointments
Fast Results
Detailed analysis within 72 hours
Doctor's Commentary
Expert interpretation of your results included
Secure & Confidential
Discreet service and consultations
Frequently Asked Questions
- Qualified Pharmacists
- Flexible Appointments
- Top Customer Service
How accurate are home finger-prick tests compared to clinic tests?
Our home finger-prick tests use the same accredited laboratories as our clinic tests. While clinic tests allow for more comprehensive panels, home tests are highly accurate for the parameters they measure.
Do I need a GP referral for a blood test?
No, you don’t need a GP referral. You can book directly with us for any blood test. We are a private clinic offering direct access to comprehensive blood testing.
How old do I have to be to have a blood test?
We will only draw blood from those aged 16 and above due to legal requirements.
How long does it take for the blood test results to come?
If you have used our clinic to complete a blood test, we send off all samples the same day to the lab to be processed. If you have used a home test kit, then once your sample has been sent off the lab will analyse your sample. Results are usually received within 72 hours.
How do I perform the home finger-prick test?
Your home blood test kit will contain easy-to-follow instructions on how to take your own finger blood sample. If you have any concerns or questions prior to using the kit, please contact our phlebotomists who will be happy to assist.
How do I prepare for a blood test?
There is no preparation required prior to taking any of the blood tests. Please simply remember to stay hydrated prior to your appointment. This is to help your veins dilate better to enable a quick and efficient blood sample to be taken and reduce the risks of feeling faint following your blood test.
Please inform the phlebotomist before your test if you are currently taking any blood thinning medication.
Should I fast before my blood test?
Fasting is not required for most blood tests. However, if your profile includes cholesterol tests and you’ve previously had high levels, consider fasting for 8 hours beforehand. While not essential, fasting can provide more accurate results.
Note: Fasting means abstaining from any food and drink, except for water.