CRDPU - Specimen: Creatine Disorders Panel, Urine

Test Catalog

Test Name

Test ID: CRDPU    
Creatine Disorders Panel, Urine

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

CRDPU / Creatine Disorders Panel, Urine is a single test that carries the results for the panel. When the test is resulted, the following procedures are billed:

-23466 / Creatine, Urine (Bill Only)

-23467 / Creatinine, Urine (Bill Only)

-23468 / Guanidinoacetate, Urine (Bill Only)


See Newborn Screen Follow-up for Guanidinoacetate Methyltransferase Deficiency (GAMT) in Special Instructions.

Specimen Type Describes the specimen type validated for testing


Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Supplies: Urine Tubes, 10 mL (T068)

Specimen Volume: 1 mL

Collection Instructions:

1. Collect a random urine specimen.

2. Immediately freeze specimen.

3. If possible, do not send other tests ordered on same vial of urine. In doing so, the other tests may have increased turnaround time due to the strict frozen criteria of this assay.


New York Clients-Informed consent is required. Please document on the request form or electronic order that a copy is on file. An Informed Consent for Genetic Testing (T576) is available in Special Instructions.

Specimen Minimum Volume The amount of sample necessary to provide a clinically relevant result as determined by the Laboratory.

0.5 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected









Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
UrineFrozen29 days