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Plasma Homocysteine

Homocysteine tHcy Total Homocysteine
EDTA or sodium fluoride plasma (process within 1h) µmol/L

About this test

Amino acid metabolised by folate, B6, and B12 pathways. Elevated levels are a risk factor for cardiovascular disease and thrombosis.

Reference Ranges

Sex Age Range Notes
All ≥ 18 yrs 5 – 15 Normal; mild elevation 15–30; intermediate 30–100; severe >100

Clinical Interpretation

High / Increased
Vitamin B12, folate, or B6 deficiency; renal failure; hypothyroidism; MTHFR polymorphism; methotrexate.

Related Tests

Creatinine Vitamin B12
Specimen
EDTA or sodium fluoride plasma (process within 1h)
Reporting Unit
µmol/L
Category
🧪 Clinical Biochemistry

⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.