OneDayTests OneDayTests

Vitamin B6 (Pyridoxine) Blood Test

Type

Blood Testing

Biomarkers

3

Duration

30 min

Results

4 days

Vitamin B6 blood test to diagnose deficiencies and monitor levels.

Vitamin B6 deficiency can lead to symptoms such as anemia, dermatitis, depression, confusion, and a weakened immune system. Testing can help diagnose such deficiencies, particularly in individuals with conditions that may affect nutrient absorption or those with poor dietary intake. Monitoring is also useful for people with chronic conditions, such as chronic renal failure, rheumatoid arthritis, and inflammatory bowel disease, which can affect vitamin B6 levels. Monitoring can be part of the management of these conditions. Testing can help ensure that adequate levels are maintained, particularly if you are taking supplements.

Key Details

Nutrients Tested
1–30+ (varies by panel)
Fasting Required
Varies by specific test
Sample Type
Blood draw
Turnaround
2–5 business days
Common Use
Deficiency screening, supplementation guidance

Who Is This For?

Vegetarians and vegans (at higher risk of B12, iron, and zinc deficiency). Older adults, as nutrient absorption decreases with age. Anyone on restrictive diets or with digestive conditions affecting absorption. People experiencing unexplained fatigue, brain fog, poor wound healing, or hair loss. Athletes with high nutrient demands from training.

What's Included

Vitamin B12
Folate (vitamin B9)
Additional vitamins and minerals (varies by panel)

Preparation Required

Fasting for 8–10 hours is recommended for some nutrient tests but not all — check with your provider. Continue taking your regular supplements unless told otherwise (the test measures your steady-state levels). Morning draws are preferred for consistent results.

Biomarkers Tested

3
B6 mg/dL

Vitamin B6 (Pyridoxine) is important for protein metabolism, cognitive development, and immune function. Deficiency can lead to anemia and neurological issues.

Vitamin B12 pg/mL

Essential for nerve function, DNA synthesis, and red blood cell formation. B12 deficiency can cause anemia, neuropathy, fatigue, and cognitive impairment. Common in vegans, vegetarians, older adults, and those taking metformin or acid-reducing medications.

Folate (Vitamin B9) ng/mL

Essential for DNA synthesis, cell division, and red blood cell formation. Folate deficiency causes megaloblastic anemia and, during pregnancy, increases the risk of neural tube defects. Works closely with vitamin B12.

Available at 29 locations

View on map
Location map
Price
£92.80 £116.00

Subscription plans and discounts (up to 20% off)

Category
Diagnostic
Sample Type
Blood draw
Duration
30 min
Results
4 days
OneDayTests

OneDayTests

Quick access to same-day medical testing with fast results for better health decisions.

Frequently Asked Questions