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HelpTest Code PTH Parathyroid Hormone (PTH) Intact, Serum or Plasma
Additional Codes
- Expanse Test Name: Parathyroid Hormone
- Medinet Ref Code:PTH
- OV Code:CHEM*PTH
Performing Laboratory
St. Lukes Hospital Laboratory
Methodology
Chemiluminescent
Specimen Requirements
Serum and plasma (EDTA, lithium heparin, and sodium heparin) are the recommended sample types.
Specimen Stability
- Allow serum blood specimens to clot completely before centrifugation.
- Keep tubes capped at all times.
- Freeze serum samples at ≤ -20°C for longer storage.
- Centrifuge and separate EDTA Plasma within on hour of collection.
|
Temperature |
EDTA Plasma Stability |
Serum Stability |
Lithium Heparin, Sodium Heparin Plasma Stability |
|
Room Temperature |
25 hours |
8 hours |
9 hours |
|
2-8ºC |
14 days |
8 hours |
72 hours |
|
Frozen at ≤-20ºC |
Not recommended |
30 days |
Not recommended |
Reference Values
14-65 pg/mL
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
CPT: 83970
LOINC: 2731-8