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HOMOCYSTEINE
MessageImmediate Specimen Processing: Immediately place sample on wet ice or refrigerateAmbulatory Collections: Do not send original SST collection tube due to the short stability of the specimen on gel. Aliquot serum/plasma into a plastic screw-cap transport vial. Ambulatory Transport Temperature to Inova Central Lab: Refrigerated Specimen Stability: 14 days
Test Code
LAB93 HOMOC
Alias/See Also
HOMOC
CPT Codes
83090
Instructions
Processing Instructions: Immediately centrifuge and pour serum off of cells and gel barrier. Minimum Testing Volume: 0.2 mL Serum Transport Temperature: Refrigerated Stability: Ambient: N/A Refrigerated (ON GEL): 6 hoursRefrigerated (OFF GEL): 14 daysFrozen: 1 year Causes for Rejection: Samples stored on gel >6 hours, unlabeled, mislabeled, wrong tube type, hemolyzed, QNS, exceeds specimen stability requirements.
Clinical Significance
1230130053
Last Updated: May 18, 2026