Gonadotropin-releasing Hormone

CPT: 83727
Print Share

Test Details


  • GNRH
  • LHRH


High-pressure liquid chromatography/tandem mass spectrometry (HPLC/MS-MS)

Specimen Requirements


Plasma with aprotinin (Trasylol®), frozen


1 mL

Minimum Volume

0.5 mL (Note: This volume does not allow for repeat testing.)


Trasylol® collection kit (Obtain N° 33328 through LabCorp branch locations.)


Using a chilled lavender-top (EDTA) tube, collect a whole blood specimen, add 0.25 mL of Trasylol® to the tube and mix well. Centrifuge the sample and remove the plasma. Freeze immediately. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Storage Instructions


Stability Requirements




48 days


291 days

Causes for Rejection

Thawed or nonfrozen specimen; specimen type other than EDTA plasma

Clinical Information

Special Instructions

Add aprotinin (Trasylol®) to all specimens to allow for analyte stability. Separate plasma immediately, store, and ship frozen.


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
502421 Gonadotropin Releasing Hormone 502422 Gonadotropin Releasing Hormone pg/mL 13660-6

For Providers

Please login to order a test.


© 2018  Laboratory Corporation of America® Holdings and Lexi-Comp Inc. All Rights Reserved.

CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2018, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf