PARATHYROID HORMONE (PTH)

Message

If intraoperative PTH, please notify Chemistry Laboratory (74232) in advance.

Test Code

LAB108

CPT Codes
83970

Preferred Specimen

One 6 mL lavender top tube
Pediatric: two lavender top microtainers

Other Acceptable Specimens

Dark green top

Instructions

Sample must be centrifuged within one hour of collection if not collected in a lavendar top. Plasma must be removed from the red cells and put into aliquot tubes following centrifugation.

Transport Temperature

Refrigerated

Specimen Stability

Ambient: plasma: 8 hours Refrigerated: plasma or whole blood: 2 days Frozen: Plasma or serum: 6 months

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Plasma clotted

Methodology
Chemiluminescent Immunoassay

Setup Schedule

Sunday-Saturday

Reference Range

Age	Reference Range (pg/mL)
< 1 year	6.5-88.5
1-8 years	16.0-63.0
9-16 years	22.0-88.0
17-18 years	16.0-60.0
≥ 19 years	8.5-77.0

Performing Laboratory
West Virginia University Hospital, Inc.
Berkeley Medical Center
Camden Clark Medical Center
United Hospital Center

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.