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HelpTest Code PTH2 Parathyroid Hormone, Serum
Specimen Required
Patient Preparation:
1. Fasting: 12 hours, preferred but not required
2. For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Secondary ID
800172Useful For
Diagnosis and differential diagnosis of hypercalcemia
Diagnosis of primary, secondary, and tertiary hyperparathyroidism
Diagnosis of hypoparathyroidism
Monitoring kidney failure patients for possible renal osteodystrophy
Method Name
Electrochemiluminescence
Reporting Name
Parathyroid Hormone (PTH), SSpecimen Type
SerumSpecimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 180 days |
| Refrigerated | 72 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
Day(s) Performed
Monday through Saturday
Report Available
Same day/1 to 2 daysPerforming Laboratory
Mayo Clinic Laboratories in Florida
Test 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 |
|---|---|---|
| PTH2 | Parathyroid Hormone (PTH), S | 2731-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| PTH2 | Parathyroid Hormone (PTH), S | 2731-8 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.