Ordering Recommendation

Use to evaluate calcium dysregulation.

Mnemonic
PTHI
Methodology

Quantitative Electrochemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Plain red or serum separator tube. Also acceptable: Green (sodium or lithium heparin).

Specimen Preparation

Allow serum specimen to clot fully at room temperature before centrifuging. Transfer 2 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature

Frozen. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions

Body Fluid (refer to Parathyroid Hormone, FNA, ARUP test code 2001491). Specimens collected in EDTA. Rapid Serum Tubes (RST).

Remarks

If requesting Ionized Calcium with PTH, submit two separate specimens. Refer to Calcium, Ionized, Serum (ARUP test code 0020135) for requirements.

Stability

After separation from cells: Ambient: 8 hours; Refrigerated: 48 hours; Frozen: 6 months

Reference Interval
Test Number
Components
Reference Interval
0070346 Parathyroid Hormone, Intact 15-65 pg/mL
  Calcium for Parathyroid Hormone, Intact 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

Interpretive Data



Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

83970; 82310

Components
Component Test Code* Component Chart Name LOINC
0070163 Calcium for Parathyroid Hormone, Intact 17861-6
0070346 Parathyroid Hormone, Intact 2731-8
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • CA and PTH
  • Intact PTH
  • Parathormone
  • PTH and CA
  • PTH intact
  • PTH Intact Molecule with Calcium
Parathyroid Hormone, Intact with Calcium