Chloride CPT: 82435

Expected Turnaround Time

Within 1 day

Specimen Requirements




1 mL

Minimum Volume

0.5 mL


Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube.


Separate serum or plasma from cells within 45 minutes of collection.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements

Temperature Period
Room Temperature 14 days
Refrigerated 14 days
Frozen 14 days
Freeze/thaw/ cycles Stable x 3

Patient Information

To determine if there is a problem with your body’s electrolyte balance or acid-base (pH) balance and to monitor treatment; as part of a routine health checkup.

As part of a standard electrolyte panel or metabolic panel or when your healthcare practitioner thinks that your signs and symptoms may be due to an electrolyte imbalance.

A blood sample drawn from a vein in your arm; sometimes a random or 24-hour urine sample.