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Labcorp Oklahoma, Inc.
Test Directory


Index:

Forearm Non-Ischemic Exercise Test

Order Name NON-ISCHEMIC
Test Number: 2001125
Revision Date 10/01/2022
Test Name Methodology LOINC Code
Lactate Baseline
Colorimetric 59004-2 
Ammonia Baseline
GLDH/UV 16362-6 
Lactate 1 minute
Colorimetric 59005-9 
Ammonia 1 minute
GLDH/UV 16362-6 
Lactate 3 minute
Colorimetric 59006-7 
Ammonia 3 minute
GLDH/UV 16362-6 
Lactate 5 minute
Colorimetric 59007-5 
Ammonia 5 minute
GLDH/UV 16362-6 
Lactate 10 minute
Colorimetric 59011-7 
Ammonia 10 minute
GLDH/UV 16362-6 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Plasma Both Gray (Sodium fluoride) and Green (Lithium Heparin) Refrigerated
Instructions Scheduled collections with the Main Lab at Siegfried Tower Patient Service Center (918) 744-2500 option 1 for x15531.
1923 S. Utica Ave. Siegfried Tower (5th floor), Tulsa, OK. 74104

Collect both a Gray (Sodium fluoride) tube for Lactate and Green (Lithium Heparin) tube for Ammonia Level for each collection time listed.
Place tubes on ice and deliver to lab immediately following procedure below.

Testing Procedure
1. Collect a baseline lactate and ammonia level.
2. Patient exercises forearm by squeezing a ball for 90 seconds.
3. Collect a lactate and ammonia level 1 minute after the forearm exercise is completed. Place on ice.
4. Collect a lactate and ammonia level 3 minutes after the forearm exercise is completed. Place on ice.
5. Collect a lactate and ammonia level 5 minutes after the forearm exercise is completed. Place on ice.
6. Collect a lactate and ammonia level 10 minutes after the forearm exercise is completed. Place on ice.

For more information please refer to this test in our Specialized Test section of our website
GENERAL INFORMATION
Testing Schedule Mon - Fri 
Expected TAT 1-2 days  
Clinical Use Useful as a screening test for defects in glycogenolysis and other defects on glycogen metabolism such as myophoserylase deficiency. 
Notes Lactate and ammonia are drawn simultaneously at different intervals. For more information on this test, access our "Specialized Tests" section.
CPT Code(s) 83605x5, 82140x5
Lab Section Chemistry