Test directory: Homocysteine, Total

Ordering Code4686
Test NameHomocysteine, Total
Preferred SpecimenSerum
Preferred ContainerSST (Gold)
Other Specimen/ContainerPlasma in EDTA, K2 (Lavender), Plasma in
Lithium Heparin (Green), Serum in Plain (Red)
Optimum Volume0.5 mL
Handling InstructionsCentrifuge to separate and aliquot serum/plasma within 1 hour of collection.
Transport RequirementsOahu: Ambient
Airline: Refrigerated
Specimen StabilityAmbient: 4 Days
Refrigerated: 2 Weeks
Frozen: 3 Months
Stability applies ONLY to serum/plasma aliquots free of red cells
Note: May not be able to do add-ons and re-testing.
Rejection CriteriaHemolyzed, Insufficient quantity, Specimen older than stability limits, Gross Lipemia, Serum/plasma not separated from red cells.
Avail. StatNO
Analytic Time1 Day
MethodologyEnzymatic

Reference range(s)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Homocysteine, TotalALL<15.0<15.0umol/L