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 RBCs from serum/plasma within 1 hour of collection, aliquot serum/plasma whenever no physical gel separator layer is present.
Transport RequirementsOahu: Ambient
Airline: Refrigerated
Specimen StabilityAmbient: 4 Days
Refrigerated: 4 Weeks
Frozen: 10 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 when no physical gel separator layer is present
Avail. StatNO
Analytic Time1 Day

Reference range(s)

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