Secondary specimen as requested by Allele Diagnostics

Test #:

910

Turnaround Time:

Dependent upon testing ordered

Specimen Requirements:

Specimens should be shipped at room temperature in a leak-proof, rigid container with overnight delivery. To discuss minimum acceptable specimens for neonatal patients or for sample types not listed, please contact Allele Diagnostics.

• For specific specimen requirements, please refer to report that has been issued or verbal request from Allele Diagnostics.

CPT Codes:

N/A. A secondary sample for testing already ordered will typically not be associated with a separate bill.

Ordering Requirements:

• Pediatric Cytogenetics Test Requisition Form

Clinical Utility:

• This test is utilized to provide specimens requested/recommended by Allele Diagnostics that will allow for completion of a previously-ordered study.

Test Description:

Testing method will be determined based on original testing ordered and follow-up needed.

At Allele Diagnostics, we do everything possible to ensure that the first specimen provided to us allows as complete a result as possible. However, in the infrequent event that a secondary specimen is necessary, our staff will communicate with the clinician/client to alert them of the recommendation for a follow-up specimen and will specify the optimal specimen to send. There are several circumstances under which a secondary specimen may be requested by our laboratory, such as:

• Buccal swab or previously extracted DNA was used for microarray, which was abnormal, therefore FISH follow-up is recommended on a peripheral blood sample.
• Sample provided was sufficient for a preliminary report but was of insufficient quality to provide high-quality results, therefore a second sample is needed to finalize the report.
• Sample type was not an appropriate tissue for the study or indication ordered.
• Sample provided was inadequate in quantity and/or quality to attempt all or a subset of tests ordered.

Please note that for abnormal chorionic villus (CVS) specimens, a follow-up amniotic fluid or blood specimen may be recommended to confirm the abnormality, and this testing is performed at a charge and should use test codes specific to tests being ordered.