ARUP's Laboratory Test Directory

0070346: Parathyroid Hormone, Intact

Test Mnemonic: PTH-INT
Methodology: Electrochemiluminescent Immunoassay

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: One 5 mL lavender (EDTA) or pink (K2EDTA).  Also acceptable: green (sodium or lithium heparin) or SST.

Transport: 2 mL plasma or serum, frozen. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.4 mL plasma or serum, frozen. 

Remarks: Allow serum specimen to clot fully at room temperature before centrifuging. Separate specimens must be submitted when multiple tests are ordered. If requesting Ionized Calcium with PTH, submit two separate specimens. Refer to Calcium, Ionized, Serum (0020135) for requirements. Do not collect in EDTA if ordering Parathyroid Hormone Intact Molecule with Calcium (0070172).

Stability: After separation from cells: Ambient: 8 hours; Refrigerated: 2 days; Frozen: 6 months

Reference Interval:
15-75 pg/mL

Note:
Test includes prompt for calcium, so clients can provide their own calcium results.

CPT Code(s):
83970