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Vitamin B6 (PLP) Unit Converter
Vitamin B6 is measured in plasma as Pyridoxal 5′-Phosphate (PLP), its biologically active coenzyme form. It plays a critical role in amino acid metabolism, neurotransmitter synthesis, and hemoglobin formation.
Monitoring PLP levels is essential for diagnosing deficiency (e.g., in alcoholism or malabsorption) or toxicity. This converter facilitates switching between the standard mass units (ng/mL, μg/L) and the international SI molar units (nmol/L).
Mass Units
StandardNanograms per milliliter (Numerically equivalent to μg/L).
SI Units / Molar
Nanomoles per liter (International Standard).
Clinical Context
Reference Ranges (Plasma PLP):
• Normal: 5 – 50 ng/mL (20 – 200 nmol/L).
• Deficiency: < 5 ng/mL (< 20 nmol/L).
Clinical Significance:
• Deficiency: Peripheral neuropathy, sideroblastic anemia, seizures, dermatitis.
• Toxicity: Long-term high doses can cause severe sensory neuropathy (ataxia, loss of proprioception).
Conversion Logic:
Molecular Weight of Pyridoxal Phosphate: ~247.14 g/mol.
1 ng/mL ≈ 4.046 nmol/L.
1 nmol/L ≈ 0.247 ng/mL.
Clinical References
How to Use This Converter
Follow these steps to normalize Vitamin B6 values.
Enter Values
Input your laboratory result into the corresponding unit field (e.g., ng/mL).
Automatic Conversion
The calculator converts between mass units and the SI molar unit using the molecular weight of 247.14 g/mol.
Reset
Use the Clear button to reset all fields.
Frequently Asked Questions
Yes. 1 nanogram per milliliter is numerically identical to 1 microgram per liter.
Pyridoxal 5′-Phosphate (PLP) is the active coenzyme form and correlates best with tissue stores of Vitamin B6.