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Test ID: CHEP    
Chimerism-Recipient Engraftment (Post)

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Specimen Type Describes the specimen type needed for testing

Varies

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.

Complete chimerism analysis also requires submission of CHRGB / Chimerism-Recipient Germline (Pre) and CHIDB / Chimerism-Donor specimens. These tests must be ordered on both the pre and donor specimens under separate order numbers. While the 3 specimens do not need to be submitted at the same time, the CHRGB and CHIDB specimens must be received before this test can be performed.

 

Forms:

1. Chimerism Analysis Information Sheet (Supply T594) in Special Instructions.

2. If not ordering electronically, submit a Hematopathology/Molecular Oncology Request Form (Supply T241) with the specimen.

 

This test also requires submission of CHRGB / Chimerism-Recipient Germline (Pre) and CHIDB / Chimerism-Donor specimens.

 

The following information is required:

1. Pertinent clinical history

2. Specimen source

3. Donor identifier and donor date of birth

4. Date of collection

 

Specimen must arrive within 168 hours of collection.

 

Submit only 1 of the following specimens:

 

Specimen Type: Blood

Container/Tube:

Preferred: Lavender top (EDTA)

Acceptable: ACD

Specimen Volume: 4 mL

Collection Instructions:

1. Only 1 tube is required.

2. Invert several times to mix blood.

3. Send specimen in original tube.

4. Label specimen as blood.

 

Specimen Type: Bone marrow

Container/Tube:

Preferred: Lavender top (EDTA)

Acceptable: ACD

Specimen Volume: 2 mL

Collection Instructions:

1. Invert several times to mix bone marrow.

2. Send specimen in original tube.

3. Label specimen as bone marrow.

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.

Blood: 3 mL/Bone Marrow: 2 mL/Lesser volumes may be acceptable, depending on white cell count. Call Mayo Medical Laboratories at 800-533-1710 or 507-266-5700 with questions.

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

Hemolysis

Mild OK; Gross reject

Lipemia

NA

Icterus

NA

Other

NA

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
VariesAmbient (preferred)7 days
 Refrigerated 7 days