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Test Code CRDPP Creatine Disorders Panel, Plasma

Additional Codes

Hospital Order Code
Lab2608   MISMGO


Ordering Guidance


For additional diagnostic testing, consider ordering CRDPU / Creatine Disorders Panel, Random, Urine.



Additional Testing Requirements


To diagnose all creatine deficiency syndromes, order CRDPU / Creatine Disorders Panel, Random, Urine in addition to this test.



Necessary Information


Patient's age and sex are required.



Specimen Required


Collection Container/Tube:

Preferred: Lavender top (EDTA)

Acceptable: Green top (sodium heparin), yellow top (ACD)

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot plasma into plastic vial. Send plasma frozen.


Useful For

Evaluating patients with a clinical suspicion of arginine:glycine amidinotransferase deficiency, guanidinoacetate methyltransferase deficiency, and creatine transporter deficiency using plasma specimens

Method Name

Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Reporting Name

Creatine Disorders Panel, P

Specimen Type

Plasma

Specimen Minimum Volume

0.1 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma Frozen (preferred) 14 days
  Refrigerated  7 days
  Ambient  72 hours

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Day(s) Performed

Tuesday

Report Available

3 to 9 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

82540

82565

82542

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CRDPP Creatine Disorders Panel, P 104537-6

 

Result ID Test Result Name Result LOINC Value
608071 Interpretation 104538-4
608072 Creatine 15045-8
608073 Creatinine 14682-9
608074 Guanidinoacetate 33244-5
608075 Creatine/Creatinine 104539-2
610624 Guanidinoacetate/Creatine 105124-2
610856 Guanidinoacetate/Creatinine 104540-0
608076 Reviewed By 18771-6

Forms

1. Biochemical Genetics Patient Information (T602)

2. If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.