Gonadotropin-releasing Hormone

TEST: 502421
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CPT: 83727
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Synonyms

  • GNRH
  • LHRH

Special Instructions

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

Expected Turnaround Time

8 - 12 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Specimen Requirements

Specimen

Plasma with aprotinin (Trasylol®), frozen

Volume

1 mL

Minimum Volume

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

Container

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

Collection

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

Freeze.

Stability Requirements

Temperature

Period

Refrigerated

48 hours

Frozen

291 days

Causes for Rejection

Thawed or nonfrozen specimen; specimen type other than EDTA plasma

Test Details

Methodology

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

LOINC® Map

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

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