Test Code PTHOR Parathyroid Hormone (PTH), Intraoperative LAB3245

Performing Laboratory

UnityPoint The Finley Hospital

Chemiluminescent immunoassay; Roche cobas Pro

Testing is performed Monday through Sunday.

Typically completed within 30 minutes after the
specimen arrives.

EDTA plasma is the specimen of choice. 500μL.

Serum is also acceptable sample type as long as the tube is spun immediately after collection.

Gel tubes are acceptable.

PTH EDTA specimens are stable for 2 days at 15-25°C, 3 days at 2-8°C, and 6 months at -20°C.

PTH serum specimens are stable for 8 hours at 15-25°C, 2 days at 2-8°C, and 6 months at -20°C.

Interoperative mode testing in patients under-going
parathyroidectomy for primary hyperparathyroidism,

The following practices are recommended:

Baseline samples should be drawn at pre-operation/exploration
and pre-excision.
Ordering pattern for the PTH-Intraoperative is typically
baseline and then samples starting at about 10 minutes following
resection and repeated until a 50% or better reduction from the
baseline value is
realized.

15-65 pg/mL

50% or better reduction from baseline value.

83970: Chemistry: Parathormone (parathyroid hormone)

72203-3 Parathyrin.Intact Intraoperative Panel-Serum Or
Plasma