Osmolality
Osmolality is an indicator of plasma tonicity / concentration, and can be useful in the assessment of fluid and electrolyte balance, particularly hyponatraemia.
| Tube | 01 (SE) - Serum Gel |
|---|---|
| ID | Tests&Tubes0086 |
| Additional Information | Osmolality will usually be increased in water depletion, DKA, hyperosmolar hyperglycaemic state (HHS), diabetes insipidus, and with alcohol ingestion. Osmolality will usually be low in adrenal insufficiency, water intoxication and SIADH. Please note: test can only be added to samples within 6 hours of collection (adults) OR within 2 hours of collection (paediatric). For information on water deprivation test, please see WDT page. |
| Turn Around | A&E: N/A Day Case: N/A In-Patient: 15 Hours Out-Patient: 24 Hours GP: N/A |
| Send to | Blood Sciences Cross Site |
| Contact | For further details please contact Leeds Pathology customer services: leedsth-tr.pathologycustomerservice@nhs.net. |
| Collection Con | Intensive care units, renal unit, transplant unit, patients on IV heparin use lithium-heparin (Green with Yellow ring) tube. Minimum volume - 250µl serum / plasma Instructions for Lab Staff: Standard lab processing - No special requirements. |
| Sample REQ | Blood |
| Ref. Range Notes | Blood Sciences reference ranges are available through the useful information and links page: https://www.leedsth.nhs.uk/a-z-of-services/pathology/blood-sciences/useful-information-and-links/ |
| Units | mOsmol/kg |
| Telepath | OSM1L |
| ICE Codes | LOSM |
