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Osmolality, Serum

Performing Lab(s)

Memorial-Belleville only

Methodology

Freezing point depression

Specimen Requirement (s)

Specimen:  serum Type: Container/Tube:  SST (gold or marble)  or plain red top

Specimen Volume:  4 mL

Specimen Minimum Volume:  1 mL of serum

 

Collection Instructions: NA

Lab instructions: NA

Day(s)/Shift(s) Test Set Up and Turnaround Time

Sunday through Saturday

Hours: 24 hours

 

Turnaround Time:

STAT: 60 minutes

Routine: less than 24 hours from receipt.

Transport and Stability

Transport temperature: Ambient to lab

Reference Values

275 - 295 mOsm/Kg

CPT/LOINC Codes

83930