Parathyroid Hormone Intact


Sunquest Code:PTHI  
Epic Code:LAB108Epic Name:Parathormone Intact
Synonyms:Parathormone; PTH, Intact; PTHI; PTH; Parathyroid Hormone N Terminal
Methodology:Chemiluminescent immunoassay
CPT Code:----------CPTCODES HERE----------
Turnaround Time:Performed and reported 24 hours/day.


Collection Instructions

Specimen:Blood
Optimal Volume:3 mL
Minimum\Peds Volume:1 mL
Container:Purple (EDTA) (Red (no gel))
Causes for Rejection:Moderate hemolysis; frozen plasma.
Contraindications:Large doses of biotin (10 mg or more per day) may cause clinically significant interference in PTHI levels. If interference is suspected, it is strongly recommended that biotin is discontinued for at least one week prior to retesting.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1.5 mL, 0.4 mL minimum. Store plasma refrigerated. Do not freeze. Serum is not recommended, but accepted if separated from cells within 2 hours of colection and assayed within 8 hours of collection or frozen. See Stability,
Shipping Instructions:Ship plasma at refrigerated temperature to arrive within 14 days. Ship serum frozen.
Test Performed at or Referral Lab Chemistry  (Fairview Southdale - FSH, Grand Itasca GICH)


Interpretive

Reference Range:18 - 80 pg/mL
GICH: 12 - 88 pg/mL
Use:Evaluation of hypercalcemia.


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