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Test Code 0995 Parathyroid Hormone (PTH), Intraoperative, Rapid, Plasma

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Chemiluminescence Enzyme Immunoassay (CEIA)

Literature Reference:

Package insert: IMMULITE Intact PTH Kit. Diagnostics Products Corporation.


Specimen Requirements


1. Notify the laboratory at least 1 weekday prior to surgery. If surgery is on a Monday, notify the laboratory at least by the previous Friday.
2. To schedule rapid PTH testing, email both the Core Laboratory (South Campus) and North Campus Laboratory (CAM) :,,,,,  and Alternately,  for surgeries at the North Campus call 314-454-7510 and for South Campus call 314-362-5257 (preferred) or 314-362-3191.
3. When surgery begins, call the Core Laboratory at 314-362-5257 or North Campus Laboratory at 314-454-7510 and provide the following information: patient name; location of OR; OR room number; phone number to callback results; and ordering physician.

Specimen Type: Plasma

Container/Tube: Lavender top (EDTA)

Specimen Volume: Full tube

Additional Information: Drawing in a plain red-top tube will delay analysis by approximately 30 minutes.

Day(s) Test Set Up

Monday through Friday

Turnaround Time:
STAT: 20 minutes (scheduled only)
Routine: test performed STAT only

Reference Values

There is no reference range associated with the IMMULITE turbo method used to perform intraoperative PTH. The surgeon is following the course of the PTH during the surgery and is looking for a significant drop in the PTH result. Routinely an approximate drop of at least 50% is expected.

Test Classification and CPT Coding


Additional Information

Laboratory Processing Instructions:

Test performed in North Campus Lab must be delivered immediately to the IMMULITE area for processing.


Specimen Transport Temperature

On wet ice

LOINC Code Information

Name LOINC Code
Parathyroid Hormone (PTH) Intraoperative, Rapid, Plasma 2731-8


Special Instructions

Analyte Stability Chart