Parathyroid Hormone Lvl (PTI)

Department: Special Chemistry
Test Synonym(s): LAB4081, PTI, Parathyroid Hormone Level, PTH
CPT Codes: 83970
Methodology: Chemiluminescent Microparticle Immunoassay
Reference Range: 6 days-1yr: 6-89 pg/mL, 1-9yrs: 16-63 pg/mL , 9-17yrs: 22-88 pg/mL , 17-19yrs: 16-60 pg/mL, 19-150yrs: 16-77 pg/mL
Tube Type: Red top
Specimen: Serum
Pediatric Requirements: 1 red microtainer
Volume: 5 mL
Minimum Volume: 1 Red top
Temperature: Separate immediately and store refrigerated
Stability: Room temp: 8 hours, >8-16 hrs @ 2-8 degreesC; >16 hrs to 6 months frozen at -20 degreesC
Reasons for Rejection: The use of gel separator tubes is not recommended and will result in a decrease in values of 20% or more compared to serum collected without additives. DO NOT USE Serum clot activator tubes (thrombin-mediated).
Days Performed: Daily
Times Performed: Continuous
TAT: STAT: 1 hour; ROUTINE: 2 hours after receiving in lab

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