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Test Code OSMO Osmolality, Serum/Plasma

Specimen Volume

1.0 mL

Preferred Specimen

Gold (SST) (Serum)

Alternate Specimen

Green Gel (GGT)

Specimen Handling Instructions

Green-top tube (Plasma-GGT) is also an acceptable specimen

Transport

Routine courier pick-up

Cutoff Time

None

Department

Chemistry

Methodology

Freezing point depression

Stat Turn-around Time

1 Hour

Routine Turn-around Time

1 Day

Reference Ranges

285-300 mOsm/Kg