Creatine; Guanidinoacetic Acid
Initial test to diagnose or rule out creatine deficiency syndromes following clinical presentation.
Patient History Form and this listed Clinical information is needed for appropriate interpretation.
Additional Clinical Information required information includes age, gender, diet (e.g., TPN therapy), drug therapy, and family history. Biochemical Genetics Patient History Form is available on the ARUP Web site at http://www.aruplab.com/patienthistory or by contacting Client Services.
1.0 mL Plasma from a Green Top Tube - Li Heparin in a Plastic Vial
1.0 mL Serum from a Red Top Tube in a Plastic Vial
or
1.0 mL Serum in a SST Gold Top Tube
or
1.0 mL Plasma from a Lavender Top Tube - EDTA in a Plastic Vial
Mix by inverting tube 8 to 10 times.
Separate from cells ASAP or within 2 hours of collection.
Transfer 1 mL serum or plasma to an Plastic Vial and freeze immediately.
1 week Refrigerated
2 weeks Frozen (preferred)
Mix by slowly inverting tube 8 to 10 times.
Separate from cells ASAP or within 2 hours of collection.
Transfer 1 mL plasma to an Plastic Vial and freeze immediately.
0.2 mL Plasma
Refer to Interpretive Results
Initial test to diagnose or rule out creatine deficiency syndromes following clinical presentation.
Order Creatine Disorders Panel, Urine 2002333, simultaneously for proper result interpretation.
This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
2 to 9 days
00913333
82540; 82542