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PTH Calcium
Test CodeLAB3048
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.
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.
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
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

