Specimen: 2 mL (1 mL min.) serum from 1 SST. Separate serum within 1 hour of collection. Ship refrigerated or frozen. Grossly hemolysed samples not accepted.
Stability (Room): 3 hrs
Stability (Refrigerated): 72 hrs
Stability (Frozen): 1 week
Method: Freezing Point Depression
Price: Contact Medilab
Turnaround time (TAT): 10 – 15 days
Usage: This assay is useful for evaluating acutely ill or comatose patients. It determines osmolality gap in cases of suspected poisonings. An increased gap between measured and calculated osmolality may indicate ingestion of poison, ethylene glycol, methanol and isopropanolol.
Home Collection: Available
Pre-test Information: No special preparation required