Test Name
HOMOCYSTEINE, URINE
Aliases
-
Abbreviations
-
Test Classification
INDIVIDUAL
Department
SPECIAL CHEMISTRY
Sub Department
-
TAT Category
ELAPSED (CONTINUOUS) TIME
Estimated TAT
240
TAT Units
HOURS
Test Requirements
Urine 5–10 mL (random or 24-hour collection), use a clean, leak-proof container; note collection type and time, 2–8 °C for up to 48 hours
Transported best refrigerated with cold packs
Special requirements: For 24-hour urine, collect all urine over 24 hours and mix well; avoid contamination
Clinical Utility
Diagnose hyperhomocysteinemia due to acquired causes (vitamin B6, B9, B12 or folic acid deficiency, hypothyroidism, renal insufficiency, some drugs) or inherited causes (homocystinuria, MTHRF C677T mutation etc.). Vitamin B12 and folate can be considered as follow up tests to elevated homocysteine results if not already performed. Hyperhomocysteinemia can increase thrombotic risk.
Last Review
26th Feb 2026