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ID:143 Osmolality
Search Links: General Info : Protocols : Patient Info

DescriptionA measure of blood tonicity / concentration
IndicationAssessment of fluid and electrolyte balance.
Additional InfoPlease note: test can only be added to samples within 6 hours of collection (adults) OR within 2 hours of collection (paediatric)
Concurrent Testsna
Dietary Requirementsna

InterpretationIncreased in water depletion, hyperosmolar nonketotic diabetic coma, DKA, DI, increased calcium, alcohol. Decreased in adrenocorticoid insufficiency, water intoxication, SIADH.

Ref. Range (Male)275 - 295
Ref. Range (Female) 275 - 295
Ref. Range (Paed)
Ref. Range Notes
UnitsmOsmol/Kg


IP Acute TATRefer to Website
IP Routine TATRefer to Website
GP Acute TAT- Contact Laboratory
GP Routine TATRefer to Website
Turnround CommentOsmolality analysis will only be treated as urgent if the lab is contacted, and in such instances will have a TAT of 3hrs
Originally edited by : MC. Last edited on 10/04/2019 14:13:06. Published By S.Bennett on 10/04/2018 14:13:06.