Sample type: Urine - Random

Test name: Osmolality

Condition / Indication: SIADH, Hyponatraemia

Special precautions & notes: If requesting analysis as part of a water deprivation test, please see the protocol below.

Reference range: Interpretation depends on paired serum osmolality, sodium levels, and fluid status.

Container: Urine plain 5ml (Beige top)

Alternative container: Universal (white top)

Ideal volume (mL): 5 mL

Referred outside NBT for analysis? No

Discipline: Clinical Biochemistry

Section: Automated Laboratory

Turnaround time: Hospital patients 8 hours; GP patients 24 hours