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Laboratory Test Reference Guide

Laboratory Information

Test Name

Osmolality

External Price (excl. GST)

Price

$8.17

Specimen Collection

Adult Specimen

Heparin (light green), SST (gold)

Paediatric Specimen

0.3 ml Heparin (light green) or Plain(red or Gold SST).

Test Information

Department

Biochemistry

Test Availability

Mon - Sun, 24hrs

Laboratory Turnaround Time

1 day, or 90 minutes for a Water Deprivation test.

Method

Freezing point depression

Reference Interval

280 - 300 mmol/kg

Uncertainty Of Measurement

+/- 3 mOsm/kg

Minimum Volume

0.1 mL serum or plasma

Electronic Information

Registration Code

OS

HL7Mapping Code

$OS