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HelpTest Code PTH2 Parathyroid Hormone, Serum
Reporting Name
Parathyroid Hormone (PTH), SUseful 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
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Patient Preparation:
1. For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
2. Patient should be fasting for 12 hours
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.
Specimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 180 days |
| Refrigerated | 72 hours | |
| Ambient | 8 hours |
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
CPT Code Information
83970
Report Available
Same day/1 to 2 daysReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
Method Name
Electrochemiluminescence
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.