Vitamin B6 (Pyridoxal-5-Phosphate) Blood Test
Description: This test measures the levels of pyridoxal-5-phosphate (PLP), the active form of vitamin B6, in the blood. It helps assess vitamin B6 deficiency or excess, which can impact nerve function, metabolism, and overall health.
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How our test process works!
Overview
The Vitamin B6 / Pyridoxal-5-Phosphate (PLP) test measures the level of active vitamin B6 in the blood. Vitamin B6 is essential for metabolism, neurotransmitter function, red blood cell production, and immune function. The test is often used to assess deficiency or toxicity of vitamin B6.
Risk Assessment
Who Should Get Tested?
- People with symptoms of vitamin B6 deficiency (e.g., irritability, depression, confusion, anemia, weakened immune system).
- Those with symptoms of excess vitamin B6 (e.g., nerve damage, tingling/numbness in the extremities).
- Individuals with malabsorption disorders (e.g., celiac disease, Crohn’s disease).
- Patients on medications that interfere with vitamin B6 metabolism (e.g., isoniazid, hydralazine).
- People with kidney disease or liver disease, as these conditions can affect vitamin B6 levels.
Normal Range
- Plasma/Serum PLP: 20–200 nmol/L (5–50 ng/mL)
- Optimal levels may vary slightly by laboratory.
Interpretation of Results
| Vitamin B6 Level (PLP) | Interpretation |
|---|---|
| Below Normal (< 5 ng/mL or < 20 nmol/L) | Possible deficiency; may cause neurological and immune issues. Common in alcoholics, pregnant women, and those with malabsorption disorders. |
| Normal (5–50 ng/mL or 20–200 nmol/L) | Optimal range for health. |
| Above Normal (> 50 ng/mL or > 200 nmol/L) | Possible toxicity; may cause nerve damage, numbness, and coordination problems. Usually due to excessive supplementation. |
Sample Type
- Blood Sample (Plasma or Serum)
- Fasting Required? Usually not required, but some labs may recommend it.
Frequently Asked Question
VITAMIN B6/PYRIDOXAL - 5 - PHOSPHATE
Vitamin B6 (Pyridoxal-5-Phosphate) Blood Test
Description: This test measures the levels of pyridoxal-5-phosphate (PLP), the active form of vitamin B6, in the blood. It helps assess vitamin B6 deficiency or excess, which can impact nerve function, metabolism, and overall health.
Covid Safety
Assured
Free Report
Counselling