Vitamin D (25-OH)
Checks your vitamin D levels essential for immunity, bone health, and mood. Many people in the UK are deficient. A quick test offering powerful insight into your overall wellbeing.
- Description
- Why This Test?
- Associated Conditions
- Uses of This Test
The Vitamin D blood test measures 25-hydroxyvitamin D (25-OH Vitamin D), the most accurate marker for assessing your body’s vitamin D status. Vitamin D plays an important role in overall health, particularly for bone strength, muscle function, and immune resilience.
Vitamin D helps regulate calcium and phosphate balance, which supports healthy bones, teeth, and muscular function. Because levels can fall gradually and symptoms can be non-specific, testing provides a reliable way to understand whether levels are sufficient and whether supplementation may be needed.
This test is commonly used as a standalone nutrient check or as part of broader wellbeing screening.
Understanding your vitamin D level is especially important in the UK, where sunlight exposure is limited for much of the year. Many people develop low vitamin D levels by the end of winter, often without realising it.
Low vitamin D may contribute to:
- Fatigue and low energy
- Bone or muscle pain and weakness
- Low mood
- Increased risk of fractures and long-term bone loss
A blood test is the only reliable way to determine whether vitamin D levels are sufficient. Results can help guide appropriate supplementation, monitor response to treatment, and support longer-term bone, muscle, and immune health.
Vitamin D Deficiency
Low vitamin D levels that may impact bone health, muscle strength, immunity, and overall wellbeing.
Bone Density Loss (supportive screening)
Low vitamin D can affect calcium regulation and may contribute to reduced bone strength over time.
Muscle Weakness (vitamin-related)
Vitamin D plays a role in muscle function; low levels may contribute to aches, cramps, or weakness.
Low Mood (vitamin-related association)
Low vitamin D has been associated with low mood in some individuals, particularly during low-sunlight months.
- Check vitamin D status
- Investigate fatigue or low energy
- Assess bone health support
- Investigate muscle aches or weakness
- Support immune health assessment
- Baseline nutritional check
What We Test
Biomarkers analysed by accredited UK laboratories
Biomarker Tested
Vitamin
- Vitamin D (25-OH)
Home Finger-Prick Testing
Enjoy the convenience of testing from home with a simple, easy-to-use kit delivered straight to your door. Your kit includes clear instructions, sterile equipment, and a prepaid return envelope for sending your sample to the laboratory.
This option is ideal if you prefer flexibility, have a busy schedule, or want to check your health privately without visiting the clinic.
Results are processed by accredited laboratories, giving you the same clinical accuracy as an in-clinic test. Expect results within 72 hours!
Why Use This Service:
Perfect for busy schedules
Results within 72 hours
Delivery across the UK
Private & discreet
Avoid travelling to Preston
Cost effective alternative
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.