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Test Code OSMFC Osmolality, Feces

Specimen Required

1 mL random watery liquid fecal collected in a plastic screw-cap container or 24-hour or 48-hour watery liquid fecal collected in a plastic screw-cap container

Specimen Minimum Volume

0.2 mL

Specimen Stability

Room temperature: Unacceptable Refrigerated: Unacceptable Frozen: Not established

Rejection Due To

Specimens in paint cans • Formed stool • Specimens received room temperature • Specimens received refrigerated

Day(s) and Time(s) Performed

Set up: Sun-Fri; Report available: 3 days

Method Name

Freezing Point Depression

Collection Container / Tube

Preferred:
Other Acceptable Container:

Transport / Storage Conditions

Frozen

Special Instructions

Specimen must be shipped frozen to reduce the odor during shipping and to minimize the risk of the container rupturing due to gas accumulation.

Note: This test only has clinical utility if performed on a watery fecal specimen.

Reference Values

No age/sex specific ranges for this test

CPT Codes

84999