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Test Code PTH2 Parathyroid Hormone, Serum

Reporting Name

Parathyroid Hormone (PTH), S

Useful For

Diagnosis and differential diagnosis of hypercalcemia

 

Diagnosis of primary, secondary, and tertiary hyperparathyroidism

 

Diagnosis of hypoparathyroidism

 

Monitoring end-stage renal failure patients for possible renal osteodystrophy

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Specimen Required


Patient Preparation:

1. 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.

2. Patient should be fasting for 12 hours

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL


Specimen Minimum Volume

0.75 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
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) and Time(s) Performed

Monday through Friday; 5 a.m.-12 a.m.

Saturday; 6:30 a.m.-5 p.m.

Test Classification

This test has been cleared, approved or is exempt by the U.S. 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

Reject 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.