PTH Calcium

Test Code
LAB3048


Alias/See Also
1231100350


CPT Codes
82310

Includes
PTH, CALCIUM


Preferred Specimen
CLINIC COLLECTIONS: Green Lithium Heparin tube (Gel separator preferred)


Minimum Volume
CLINIC COLLECTIONS: 0.5 mL plasma


Instructions
CLINIC COLLECTIONS: Collect 0.5 ml plasma in Green Lithium Heparin tube (Gel separator preferred). Must be spun within 2 hours after collection. If no gel separator, plasma must be pulled off cells within 2 hours.

If collecting with AST, ALT, VD25, K+, or LDH, label routes to Gold/SST. Collect 1.0 mL of serum in Gold/SST. Must be spun within 2 hours after collection.


Transport Temperature
Refrigerated


Specimen Stability
Room Temperature (20 to 25°C): 7 days
Refrigerated (2 to 8°C): 3 weeks
Freezer (-20°C): 8 months
1. If testing will be delayed longer than the maximum 2 to 8°C storage time, remove serum or plasma from the clot, red blood cells, or separator gel and store frozen (-20°C).
2. Avoid multiple freeze/thaw cycles.


Methodology
Abbott Alinity

Reference Range
Males/Females:
0-60 Days: 6.1-11.0 mg/dL
60-180 Days: 9.0-11.0 mg/dL
180 Days-15 Years: 8.8-10.8 mg/dL
15-18 Years: 8.5-10.4 mg/dL
Adults: 8.4-10.2 mg/dL


Performing Laboratory
CONWAY LABORATORY FORT SMITH LABORATORY HEBER SPRINGS LABORATORY LITTLE ROCK LABORATORY NORTH LITTLE ROCK LABORATORY EL DORADO LABORATORY MAGNOLIA LABORATORY DREW COUNTY LABORATORY


Last Updated: August 28, 2026


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.