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Test Code PTH.1 PARATHYROID HORMONE, INTACT

Important Note

  • Specimen must be centrifuged and serum removed from cells within 1 hour of draw.

This test also includes testing for calcium and phosphorus.

  • 24 hours before this blood test: Do not take any supplements containing biotin or Vitamin B7 which are commonly found in hair, skin, and nail supplements, and multi-vitamins.
  • Sufficient Biotin concentrations in serum can lead to falsely decreased results.

Methodology

Electrochemiluminescent Immunoassay

 

Useful in the evaluation of primary and secondary disorders of calcium metabolism.

Specimen Requirements

Specimen must be centrifuged and serum removed from cells within 1 hour of draw.

 

Submit only 1 of the following specimens:
 

Preferred:

 

Serum Gel Tube

Container/Tube: Serum gel tube(s)
Specimen Volume: 2 mL (minimum volume: 1 mL) of serum

Collection Instructions: Spin down within 1 hour of draw.

 

 

Alternate:

 

Plain, Red-Top Tube

Container/Tube: Plain, red-top tube(s)
Specimen Volume: 2 mL (minimum volume: 1 mL) of serum

Collection Instructions: Spin down within 1 hour of draw.

 

Plasma

Container/Tube: Green-top (lithium heparin) tube(s)

Specimen Volume: 2 mL (minimum volume: 1 mL) of plasma

Collection Instructions: Spin down within 1 hour of draw.

 

Specimen Retention Time

48 hours

Day(s) Test Set Up

Monday through Friday

 

Specimen Stability

 

Specimen Type Temperature Time
Blood Refrigerate < 48 hours
  Frozen > 48 hours
     

Reference Values

1.6-7.7 pmol/L

Performing Laboratory

Logan Health Medical Center-Chemistry

Test Classification and CPT Coding

83970-PTH

84100-Phosphorus