Osmolality, Fluid - Saskatoon

Discipline

Biochemistry

Overview

Alias

Osmo

Specimen Information

Specimen types accepted

Miscellaneous fluid

Specimen collection container

Preferred Collection Container: Sterile Starplex container or similar container

Required volume

Optimal Volume: 2.0 mL
Minimum Volume: 1.0 mL

(Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection)

Transport and stability

4 hours on cells
5 days at 2 – 8 °C

Rejection criteria

Specimens received where the proper collection protocols were not followed
Pathology and Laboratory Medicine Acceptance and Rejection Criteria

Performance

Methodology

Freezing point osmometry

Days/times performed

Availability	24 hours a day
Testing Site	SPH, RUH This testing shall be performed at RUH and SPH if cleared by the biochemist on call

Maximum laboratory time

Results Reporting

In Hospital reported within 2 hours
Community urgent and inter-hospital reported within 4 hours
Community routine reported within 24 hours

Specimen retention time

3 days

Last Updated: October 10, 2024