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Parathyroid, Intact
MessageTest Code
PTHI
Alias/See Also
PTH, PTHI, Parathyroid
CPT Codes
83970
Preferred Specimen
Serum GOLD (SST)
Other Acceptable Specimens
Plasma (GRN), EDTA (LAV)
Specimen Stability
For serum samples:
- Store samples tightly stoppered at room temperature (15 to 30°C) for no longer than 4 hours.
- If the assay will not be completed within 4 hours, refrigerate samples at 2 to 8°C for no longer than 8 hours.
- If the assay will not be completed within 8 hours, or for shipment of samples, freeze at -20°C or colder for no longer than 6 months.
- Thaw samples no more than three times. Avoid assaying lipemic or hemolyzed samples.
- Store samples tightly stoppered at room temperature (15 to 30°C) for no longer than 8 hours.
- If the assay will not be completed within 8 hours, refrigerate samples at 2 to 8°C for no longer than 48 hours.
- If the assay will not be completed within 48 hours, or for shipment of samples, freeze at -20°C or colder for no longer than 6 months.
- Thaw samples no more than three times. Avoid assaying lipemic or hemolyzed samples.
Setup Schedule
24x7
Reference Range
14-64 pg/mL
Clinical Significance
Diagnose the cause of a low or high calcium level and to help distinguish between parathyroid-related and non-parathyroid-related causes.
Monitor the effectiveness of treatment when an individual has a parathyroid-related condition. PTH is routinely monitored for people with chronic kidney disease or who are on dialysis.
Monitor the effectiveness of treatment when an individual has a parathyroid-related condition. PTH is routinely monitored for people with chronic kidney disease or who are on dialysis.
Performing Laboratory
CRMC Laboratory
