Circulating Tumor Cells (CTC) for Breast Cancer by CellSearch, Blood
Specimen Type Describes the specimen type needed 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.
Specimen must be shipped immediately to ensure processing can be completed within 96 hours of draw. Send specimen Monday through Friday only and not the day before a holiday. Ship specimen overnight in an Ambient Mailer-Critical Specimens Only (Supply T668).
Container/Tube: CellSave tubes only
Specimen Volume: Two 10-mL tubes
1. Use the Circulating Tumor Cell Collection Kit (Supply T630).
2. Draw whole blood in 2 CellSave preservative 10-mL tubes.
- Draw a minimum of 7.5 mL of whole blood into each tube.
3. Immediately gently invert each tube 8 times.
4. Send specimen on same day of draw.
1. Date and time of draw are required.
2. Stabile at 15 to 30 degrees C for 96 hours. Ship specimen ambient. Do not refrigerate or freeze. Protect from extreme temperatures.
3. Tubes cannot be combined; each tube must contain at least 7.5 mL.
Forms: If not ordering electronically, submit a Pathology/Cytology Request Form (Supply T246) with the specimen or complete, print, and send a Oncology Test Request Form (T729) with the specimen (www.mayomedicallaboratories.com/media/customer-service/forms/oncology-request-form.pdf).
Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.
Mild reject; Gross reject
Specimen drawn in a tube other than CellSave tube or submitted in an expired CellSave tube. Specimens > or =96 hours old. Specimens submitted for reasons other than monitoring metastatic breast carcinoma.
Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.
|Whole blood||Ambient||4 days|