Parathyroid Hormone, Intact with Calcium : ARUP Lab Tests

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0070172: Parathyroid Hormone, Intact with Calcium

Test Mnemonic: PTHI
Methodology: Electrochemiluminescent Immunoassay Performed: Sun-Sat Reported: Within 24 hours

Specimen Required:

Collect: One 4 mL plain red or SST. Also acceptable: green (sodium or lithium heparin).

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

Pediatric Collection/Transport: 0.5 mL serum or plasma, 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.

Unacceptable Conditions: Specimens collected in EDTA.

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

Reference Interval:

Test Number	Components	Reference Interval
0070346	Parathyroid Hormone, Intact	15-75 pg/mL
	Calcium, Total	0-6 years: 8.4-10.2 mg/dL 7-17 years: 8.5-10.7 mg/dL 18 years and older: 8.4-10.2 mg/dL

CPT Code(s):
83970 Parathyroid hormone, intact; 82310 Calcium total

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