19701 - Specimen: Biliary Tract Malignancy, FISH Only

Test Catalog

Test Name

Test ID: 19701    
Biliary Tract Malignancy, FISH Only

Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.

When this test is ordered, biliary tract malignancy testing by FISH will be performed.

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 Type: Bile duct brushing, bile duct aspirate, hepatobiliary brushing, or hepatobiliary aspirate

Container/Tube: Separate ThinPrep vial containing 20 mL PreservCyt or CytoLyt solution (Supply T536) for each specimen

Specimen Volume: Entire collection

Collection Instructions:

1. If performing local cytology before processing specimen, aliquot half of the specimen into another ThinPrep vial.

2. Retain 1 aliquot for local cytology and submit the second aliquot for analysis at Mayo Medical Laboratories.

3. Submission of the residual specimen (after processing for cytology) may compromise the sensitivity of the test.


1. Pathology/Cytology Information (T707) in Special Instructions

2. If not ordering electronically, complete, print and send 1 of the following forms with the specimen:

Pathology Test Request Form (T246) (http://www.mayomedicallaboratories.com/it-mmfiles/pathology-request-form.pdf)

Oncology Test Request Form (T729) (http://www.mayomedicallaboratories.com/it-mmfiles/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.

10 mL

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








Cyst, fine-needle aspiration (FNA), or pancreatic mass

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

Specimen TypeTemperatureTime
MixedAmbient (preferred)