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Patient Education

Mayo Clinic Laboratories

Test Code LAB420 Osmolality, Random Urine

Reporting Title

Osmolality, Random Urine

Methodology

Advanced Instruments/Freezing Point Depression

Performing Laboratory

OhioHealth Laboratory Services-RMH, GMC, DH, DMH MGH, MH, BH and OMH Core Laboratories

Specimen Requirements

Minimum of 1.0 mL of urine from a random urine collection in a 10 mL BD yellow-top round bottom urine tube or a screw-capped, sterile, plastic urine container. No preservative.

DO NOT SEND THE BLUE CAPPED INTEGRATED TRANSFER DEVISE COLLECTION CONTAINER. THEY OFTEN LEAK AND HAVE A METAL NEEDLE ATTACHED WHICH PRESENTS A SAFETY ISSUE.

Note:  Follow instructions in “Urine Collection” in “Special Instructions.”

Specimen Transport Temperature

Ambient/Refrigerate OK/Frozen OK

Reference Values

No established reference values

Day(s) Test Set Up

Monday through Sunday; Continuously

Test Classification and CPT Coding

83935

Special Instructions