CDOS

Parathyroid Hormone (PTH), plus Calcium

Test Code: 054601

Performing Lab: LabCorp

CPT Code: 82310 001 83970 001

Test Link (Copy)

Synonym

PTH-Intact

Specimen Type

Plasma AND serum

Specimen Container

Lavender-top (EDTA) tube AND red-top tube or gel-barrier tube

Volume

1.5 mL plasma AND 1.0 mL serum

Minimum Volume

0.7 mL plasma AND 0.5 mL serum

Specimen Handling

Plasma: Transfer separated plasma to a plastic transport tube clearly labeled as EDTA plasma and maintain refrigerated temperature. Serum: If red-top tube is used, transfer serum to a plastic transport tube clearly labeled as serum.

Unacceptable Conditions

Whole blood; plasma other than EDTA; hemolysis; room temperature serum sent for PTH Intact

Temperature

Refrigerate

Methodology

Plasma: Electrochemiluminescence immunoassay (ECLIA) Serum: Colormetric

Stability

Room Temperature: Serum: 14 days Plasma: 2 days (stability determined by manufacturer or literature reference)
Refrigerated: Serum: 14 days Plasma: 3 days (stability determined by manufacturer or literature reference)
Frozen: Serum: 14 days Plasma: 6 months (stability determined by manufacturer or literature reference)

Result Code	Result Name	LOINC
001016	Calcium	17861-6
015610	PTH, Intact	2731-8
004000	Intact PTH	8251-1

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