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HelpTest Code PTH1 Parathyroid Hormone, Serum
Specimen Required
Patient Preparation: For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.
Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Specimen Volume: 1 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.
Useful For
Diagnosis and differential diagnosis of hypercalcemia
Diagnosis of primary, secondary, and tertiary hyperparathyroidism
Diagnosis of hypoparathyroidism
Monitoring end-stage kidney failure patients for possible kidney osteodystrophy
Method Name
Electrochemiluminescence
Reporting Name
Parathyroid Hormone (PTH), SSpecimen Type
SerumSpecimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 180 days |
| Refrigerated | 48 hours | |
| Ambient | 8 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
Reference Values
<1 month: 7.0-59 pg/mL
4 weeks-11 months: 8.0-61 pg/mL
12 months-10 years: 11-59 pg/mL
11 years-17 years: 15-68 pg/mL
18 years and older: 15-65 pg/mL
Performing Laboratory
MCHS- MankatoTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
83970
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| PTH1 | Parathyroid Hormone (PTH), S | 2731-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| PTH1 | Parathyroid Hormone (PTH), S | 2731-8 |
Day(s) Performed
Monday through Sunday