Osmolality

Alphabetical Test listing

Osmolality-182

Test name:

Osmolality

Test number:

182

Excellian order number:

83930.0

Abbreviation:

OSB

Specimen type:

Lithium heparin (Li hep) plasma

Collection container:

Lt green plasma separator (PST)

Volume:

1.0 mL

Minimum volume:

0.2 mL

Collection instructions:

Immediately follow collection, mix sample by inverting 8 - 10 times to prevent clotting

Processing instructions:

Spin within two (2) hours of sample collection

Transport container:

Lt green plasma separator (PST)

Alternate specimen type:

Serum

Alternate collection container:

Gold serum separator (SST) tube

Alternate collection instructions:

Immediatley following collection, mix sample by gently inverting 5 times

Alternate processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Alternate transport container:

Gold serum separator (SST) tube

Transport and stability:

Refrigerated (preferred) - 7 days

Frozen - 7 days

Ambient - 24 hours

Reason for rejection:

Improper labels (unlabeled or mislabeled)
Hemolysis (some procedures)
Improper anticoagulant or ratio
Delay in transport
Improper storage temperature affecting results
Improper container
Leaking container resulting in compromised specimen
Quantity not sufficient (QNS)

Performing lab:

AHL - Chemistry: C

Days set up:

Daily

TAT:

1 day

Method:

Freezing Point Depression

Reference ranges:

275 - 300 mOsm/Kg

CPT codes:

83930

Date created:

11/30/2001

Revised date:

02/13/2020

Review date:

01/04/2024