Ordering Recommendation
Mnemonic
FEC OSMO
Methodology

Quantitative Freezing Point

Performed

Sun-Sat

Reported

1-2 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Liquid stool.

Specimen Preparation

Do not add saline or water to liquefy sample. Transfer 5 mL liquid stool to an unpreserved stool transport vial (ARUP Supply #40910). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 0.5 mL)

Storage/Transport Temperature

CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions

Formed stool.  Specimens in media or preservatives.

Remarks
Stability

Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month

Reference Interval

0-16 years: 271-296 mOsm/kg
17 years and older: 280-303 mOsm/kg

Interpretive Data



Compliance Category

Standard

Note
Hotline History
N/A
CPT Codes

84999

Components
Component Test Code* Component Chart Name LOINC
0098122 Osmolality Fecal 2693-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Fecal Osmolality
  • Osmolal gap
  • osmolality, feces
  • Osmotic gap
  • stool osmotic gap
Osmolality, Fecal