Ordering Recommendation
Mnemonic
FE-K
Methodology

Quantitative Ion-Selective Electrode

Performed

Sun-Sat

Reported

Within 48 hours

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

24-hour or random stool.

Specimen Preparation

Transfer a 5 g stool to an unpreserved stool transport vial (ARUP Supply #40910). Available online through eSupply using ARUP Connect™ or contact Client Services at (800) 522-2787. (Min: 1 g) Mix 24-hour collection well. Do not add saline or water to liquefy specimen.

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Formed or viscous stool.

Remarks
Stability

Ambient: 1 hour; Refrigerated: 2 weeks; Frozen: 6 months

Reference Interval

A reference interval has not been established for fecal specimens.

Interpretive Data



Compliance Category

Laboratory Developed Test (LDT)

Note
Hotline History
N/A
CPT Codes

84999

Components
Component Test Code* Component Chart Name LOINC
0020380 Potassium, Stool 15202-5
* 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
  • Electrolytes, Feces
Potassium, Fecal