Sign in →

Test Code PTHIN Parathyroid Hormone (PTH) Intact LAB108

Important Note

Human Anti-Mouse Antibodies (HAMA) may be present in samples from patients who have received immunotherapy utilizing monoclonal antibodies. Additionally, other heterophile antibodies such as human anti-goat antibodies may be present in patient samples. Manufacturers formulate assays to minimize the effects of these antibodies; however careful evaluation of patient results must be done when patients are known to have such antibodies.

Test Method

Two-Site Immunoenzymatic (“Sandwich”) Assay; Beckman Access II


Testing is performed Monday through Sunday.

Typically completed the same day the specimen arrives at the
testing site.

Reference Values

15-65 pg/mL

Useful For

Diagnosis and differential diagnosis of hypercalcemia

Diagnosis of primary, secondary, and tertiary

Diagnosis of hypoparathyroidism

Monitoring end-stage renal failure patients for possible renal


Specimen Requirement

0.5 mL serum or plasma (heparin or EDTA) is

CPT Code Information

83970: Chemistry: Parathormone (parathyroid hormone)

LOINC Code Information

2731-8 Parathyrin.Intact [Mass/Volume] In Serum Or Plasma

Additional Specimen Collection Information

Collect blood in a lithium heparin, green-top, EDTA, purple
top, or red-top tube. PST and SST (gel tubes) are acceptable.
Serum or plasma should be separated from contact with the cells
within 2 hours of collection. Specimens not centrifuged within 4
hours of collection may be rejected. Refrigerate the specimen if
unable to assay within 8 hours of collection. Samples with
≥3+ lipemia must be cleared prior to analysis.