Osmolality, Urine

General Information

Method

Freezing Point Depression

Reference Range

Units: mOsm/kg

Female		Male		Unknown
Age	Range	Age	Range	Age	Range
0-	100-850	0-	100-850	0-	100-850

Effective date: 03/27/2018

Specimen Type: Urine
Collection: RANDOM URINE in yellow top urine collection tube (UA no additive)- Refrigerate immediately after collection
Also acceptable: 24-hour urine, Refrigerate during collection/No preservative
Quantity: Requested: 1 mL urine
Minimum: 0.5 mL urine

Receiving Instructions: UW-MT Instructions
SPS - If received in a yellow top tube, deliver directly to Hand Test bench. If received in a cup, decant and deliver aliquot to Hand Test bench
If 24-hour urine, Measure & Record TV on request, enter Interval, TV as login comment

HMC Instructions
SPS - Take specimen directly to the UA Bench
If 24-hour urine, Measure & Record TV on request, enter Interval, TV as login comment

Stability: Refrigerated: 24 hours. Freeze for longer storage.

Lab Department

Chemistry(CH)

Frequency

Daily

Available STAT?

Yes

Performing Location(s)

HMC	Chemistry, Urinalysis 206-520-4600 325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420
UW-MT	Chemistry, Special 206-520-4600 Clinical Lab, Room NW220, University of Washington Medical Center, 1959 NE Pacific street, Seattle, WA 98195