Osmolality

Test ID: 

703059

CPT code:

83930

Clinical Use:

Evaluate electrolyte and water balance, hyperosmolar status, and hydration status; evaluate dehydration, acid-base balance; evaluate seizures; clue to alcoholism, methanol toxicity, ethylene glycol ingestion; evaluate antidiuretic hormone function, liver disease, hyperosmolar coma, evaluate hypernatremia. Osmolarity measures the concentration of particles in solution.

Specimen Type:

Serum or plasma

Requested Volume: 

2 mL

Minimum Volume: 

0.2 mL

Container Type: 

Red-top tube, gel-barrier tube, or green-top (heparin) tube.

Collection:

Pediatric: Blood drawn from heelstick for capillary. Separate serum or plasma from cells as soon as possible after clot formation. Transfer specimen to a plastic transport tube.

Storage Instructions:

Refrigerate

Rejection Criteria:

Hemolysis

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MCI Diagnostic

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7018 South Utica Avenue

Tulsa, Oklahoma 74136

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