Mar 14, 2015




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,KITS


Osmolality (GM2215) KITS Lab Test

Name: Osmolality

Test Name: Osmolality

Health Link Test Code: GM2215

LIS Test Code: SOSM

CPT Code(s): 83930

Methodology: Freezing Point Osmometer

Days Performed: Daily, 24 hours.

In-Lab Turnaround Time: 4 hours.

Stat In-Lab Turnaround Time: 1 hour.

Specimen: Blood

Collection Container: Red cap with yellow ring (SST)

Also Acceptable: Green cap with yellow ring (PST), Green top, Red top

Collection Volume: 2 mL

Pediatric Collection Volume: 1 mL

Stability Ambient:

48 hours

Stability Refridgerated:

48 hours

Sample Analyzed: Serum or plasma

Testing Volume: 1 mL

Pediatric Testing Volume: 0.5 mL

Specimen Processing:

Centrifuge. If a complete barrier has not formed, transfer cell-free serum/plasma to plastic vial. Refrigerate.

Specimen Transport:

Transport specimen to UWHC Hospital Laboratory. Transport with coolant pack if coming from clinic location.


Age:  mOsm/kg
0 days to 30 days  266-298
31 days and up  278-298

Interpretation Type: Reference Interval