Return to Test Directory
POTASSIUM, feces (087-0543)
Test Mnemonic:

K FEC RAN (random) or K FEC TIME (24 hr collection)

Specimen Requirements:


Random or 24-hour collection.  Plain tube or plastic cup with tight-fitting lid.


Plain tube or plastic cup with tight-fit lid



Delivered to Sample Management.    

Specimen Preparation:


All samples should be stored refrigerated during collection and until delivered to the laboratory.



Causes for Rejection:

Incomplete and/or incorrect sample identification, improper storage/transport

Reference Range:


By report (reports may vary based on instrumentation, patient age and sex)


Turnaround Time:

Routine: 8 hours; ASAP: 4 hours; STAT: 1 hour. 




Clinical Chemistry

CPT 4 Code:



Timed collections must have start date and time and finish date and time on request form.

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.
Return to Test Directory