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Test Code Billings Clinic: 4738 Parathyroid Hormone (PTH), Dialysis, Serum

Important Note

Billings Clinic Dialysis Patients Only

Results from patients taking biotin supplements or receiving high-dose biotin therapy should be interpreted with caution due to possible interference with this test.

Performing Laboratory

Billings Clinic Laboratory: Chemistry

Methodology

Chemiluminescent Immunoassay

Specimen Requirements

  • Draw blood in a plain, red-top tube(s) or a serum gel tube(s).
  • Spin down
  • Send 1 mL of serum frozen in plastic vial.

Storage/Stability

Specimen Type Temperature Time
Serum Refrigerated 8 hours
  Frozen (preferred) 1 month
  Ambient 8 hours

Reject Due To

  • Serum specimens frozen and thawed more than once
  • Gross Hemolysis

Reference Values

18.5 - 88.0 pg/mL

Test Classification and CPT Coding

83970 - PTH

LOINC Code Information

Reporting Name LOINC Code
PTH, Intact 2731-8