Osmolality, Plasma

Department

Core Biochemistry

Delphic Registration Code

OSM

Synonyms

Osmol, plasma

Turnaround Time

3 hours

Test Code

3130

Specimen Type

• Serum
• Plasma

Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin - Non-gel (Green Cap)

Preferred if West Coast

• Lithium Heparin - Gel (Light Green Cap)

Acceptable

• Serum (Red Cap)
• SST II (Gold Cap)
• Lithium Heparin - Gel (Light Green Cap)

Preferred Sample Volume (ml)

4.5

No of Samples Required

1

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• Lithium Heparin - Non-gel (Green Cap)

Preferred Sample Volume (ml)

0.6

Additional Specimen Information

Paediatric Specimen - Heparin microtainer tube 600 µL

Aliquot Instructions

Sample Type

• Serum
• Plasma

Minimum Volume (ml)

0.3

Reference Intervals

280 – 300 mmol/kg

Test Method

Freezing point depression using Advanced Instruments 3250 Osmometer.

Non-Funded Test Cost

$10.97 (Exclusive of GST)

Billing Code

3130

Contact Information

Enquiry Form