Homocysteine — Cardiovascular Risk Factor: Range, Interpretation
Updated: June 2025
Homocysteine is a sulfur-containing amino acid, an intermediate in methionine metabolism. Elevated levels are an independent risk factor for atherosclerosis, thrombosis, and pregnancy complications.
Reference Range
5–15 мкмоль/л
Causes of Elevation
- Deficiency of vitamins B6, B12, folic acid
- Genetic mutations (MTHFR)
- Renal failure
- Hypothyroidism
- Smoking
- Certain medications (methotrexate, carbamazepine)
Track your biomarker trends with Health Vault.