8973 - Specimen: Congo Red Stain

Test Catalog

Test ID: 8973    
Congo Red Stain

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.

A pathology/diagnostic report and brief history, patient's age and sex, and pathologist's name, address, and telephone number are required.


Forms: If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request Form (T726) with the specimen (http://www.mayomedicallaboratories.com/it-mmfiles/hematopathology-request-form.pdf)


Specimen Type: Bone Marrow

Container/Tube: Bone marrow slides

Specimen Volume: 4 unstained bone marrow fresh prep aspirate slides

Additional Information: Indicate bone marrow.


Specimen Type: Body Fluid or Synovial Fluid

Container/Tube: Lavender top (EDTA)

Specimen Volume: 3 mL

Additional Information: Indicate body fluid or synovial fluid.

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.

Bone Marrow: 2 slides/Body Fluid or Synovial Fluid: 1 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 temperature(s) are also included.

Specimen TypeTemperatureTime