Specimen:

Urine

Collection Medium:

Alternate
Collection Media:

Call laboratory for additional acceptable specimen collection 
containers.

Minimum:

24 hr collection; no preservative.  Collections other than 24 hr will
not be calculated for Meq/24 hr.

Testing
Schedule:

24 hrs/day, 7 days a week, including holidays.

Analytic Time:

2 hours (upon receipt in laboratory)

Reference Range:

25-125 mEq/24 hr

Methodology:

Ion Selective Electrode

Sample
Processing:

Submit in leakproof container.
Label transport tube with two patient identifiers, date and time of 
collection.

Sample
Storage:

Refrigerate.

Transport
Instructions:

Place requisition in bag, seal bag, and tape securely to (urine) 
container.
Transport in cooler with refrigerated coolant packs.

Instructions:

Use no preservative. Submit entire 24 hour collection.  Record date and 
time of collection on requisition.

CPT Code:

84133

See Additional Information:
Urine Collection, 24 Hour
Urine Tests Requiring no Preservatives