Vitamin B6 Test
Vitamin B6 Test is a laboratory test you can order directly. A vitamin B6 test measures the amount of vitamin B6 in your blood. It is ordered to check for a deficiency or excess, often when you have symptoms like numbness, confusion, or skin problems.
- Sample type
- blood
- Category
- Vitamin & Mineral
- Turnaround
- 1-3 business days
- Price
- $129
- Referral
- Not required
A vitamin B6 test measures the amount of vitamin B6 in your blood. It is ordered to check for a deficiency or excess, often when you have symptoms like numbness, confusion, or skin problems.
What it measures
- Pyridoxal 5'-phosphate (PLP) — The active form of vitamin B6 in the body; this is the most common marker measured.
- Total vitamin B6 — A measure of all forms of vitamin B6 in the blood, sometimes used as an alternative.
- Pyridoxal — Another form of vitamin B6 that can be measured, though less commonly.
Who it is for
A doctor may order this test if you have symptoms of vitamin B6 deficiency, such as tingling in hands and feet, or if you take certain medications that affect B6 levels.
Preparation
No special preparation is usually needed. You can eat and drink normally before the test.
Results and what they mean
Results are reported as a number that shows how much vitamin B6 is in your blood. Your clinician will interpret the result based on your health history and other factors. This information is not medical advice; talk to your healthcare provider about your results.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the vitamin b6 test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to fast for a vitamin B6 test?
No, fasting is not required. You can eat and drink as usual before the test.
What can affect my vitamin B6 test results?
Certain medications, supplements, and health conditions can affect your B6 level. Tell your doctor about any supplements or medicines you take.
How long does it take to get results?
Results are typically available within 1 to 3 business days.
Is this test covered by insurance?
Coverage depends on your insurance plan and the reason for the test. Check with your insurance provider.