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Test Code HPWET Hematopathology Consultation, MCL Embed


Ordering Guidance


1. If requesting a peripheral blood smear evaluation only, order SPSM / Morphology Evaluation (Special Smear), Blood.

2. If requesting a hematopathology consultation on paraffin-embedded tissue and slides, order PATHC / Pathology Consultation. Also include a cover letter indicating hematopathology review requested.

3. If requesting a hematopathology consultation and only paraffin-embedded biopsy/clot samples and bone marrow aspirate are submitted, order HPCUT / Hematopathology Consultation, Client Embed. Orders for HPCUT require MCL prior authorization.



Additional Testing Requirements


 



Shipping Instructions


Attach the green "Attention Pathology" address label (T498) to the outside of the transport container before putting into the courier mailer.



Necessary Information


All requisition and supporting information must be submitted in English.

 

Each of the following items is required:

1. All requisitions must be labeled with:

-Patient name, date of birth, medical record number, and either case number or pathology ID

-Name and phone number of the referring pathologist or ordering provider

-Collection date

2. Hematopathology Patient Information (T676); print and submit with the case

3. A recent Hematology/Oncology clinical note; print and submit with the case

4. Complete blood cell count (CBC) results from testing performed within 14 days of bone marrow collection.

5. Indicate clinical reason/context

6. All pending and final reports for ancillary testing on submitted specimens.



Specimen Required


All specimens are required to perform testing.

Supplies: Bone Marrow Collection Kit (T793)

 

Additional Information:

All specimens and paperwork must be labeled with:

-Two patient identifiers (patient name, date of birth, medical record number, case number, or pathology ID)

-Specimen type

 

Information on collecting, packaging, and shipping specimens is available:

-Bone Marrow Core Biopsy, Clot, and Aspirate Collection Guideline

-Assistance with Bone Marrow Collection

 

Specimen Type: Bone marrow aspirate

Slides: 5

Preferred: Freshly prepared slides made at the time of specimen collection

Acceptable: Slides made from EDTA bone marrow specimen, within 2 hours of collection

Submission Container/Tube: Plastic slide holder

Specimen Volume: 5 Total slides: 2 direct smears and 3 unit prep slides; unfixed and unstained, per unilateral collection

Collection Instructions:

1. Prepare slides of bone marrow aspirate.

2. If bone marrow units are sparse or absent or aspirate is a dry tap, make biopsy touch prep slides.

3. Air dry slides. Do not place on hot plate to dry.

4. Place Parafilm around the slide carriers holding unstained slides to prevent exposure to formalin fumes during transport. Place slides in a separate bag apart from any formalin-fixed clot or core biopsy specimens. If using slide carriers, make sure they have not been used to carry fixed slides previously.

 

Specimen Type: Bone marrow aspirate

Container/Tube: Lavender top (EDTA) and yellow top (ACD solution A or B)

Specimen Volume: 2 x 3 mL in EDTA and 2 x 6 mL in ACD solution A or B

Collection Instructions:

1. Aspirate per standard bone marrow collection procedure.

2. Send bone marrow specimens in original tubes. Do not aliquot.

 

Specimen Type: Bone marrow aspirate clot

Container/Tube: Bone marrow aspirate clot in 10% formalin

Specimen Volume: 0.5 mL

Collection Instructions:

1. Place 0.5 mL bone marrow aspirate in clot tube.

2. After clot has formed, place clot in 10% formalin.

3. Place Parafilm around the container to prevent exposure.

 

Specimen Type: Bone marrow core biopsy

Container/Tube: Fixed biopsy core in 10% formalin

Collection Instructions:

1. If bone marrow units are sparse or absent, or aspirate is a dry tap, make biopsy touch prep slides.

2. Place biopsy core in 10% formalin immediately after collection.

3. Fix in 10% formalin for 1 to 2 hours.

4. Place Parafilm around the 10% formalin container to prevent exposure.

 

Specimen Type: Blood

Slides: 2

Preferred: 2 Freshly prepared fingerstick slides

Acceptable: 2 Slides made from whole blood in EDTA, within 8 hours of collection

Submission Container/Tube: Plastic slide holder

Specimen Volume: 2 Unstained and unfixed slides

Collection Instructions:

1. Prepare 2 smears of even thickness.

2. Place Parafilm around the slide carriers holding unstained slides to prevent exposure to formalin fumes during transport. Place slides in a separate bag apart from any formalin-fixed clot or core biopsy specimens. If using slide carriers, make sure they have not been used to carry fixed slides previously.


Forms

1. Hematopathology Patient Information (T676) is required.

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

-Hematopathology/Cytogenetics Test Request (T726)

-Benign Hematology Test Request (T755)

Useful For

Obtaining a rapid, expert opinion for diagnosis of hematologic and non-hematologic diseases using unprocessed bone marrow biopsy specimens referred by the primary pathologist

 

Obtaining special studies that are not available locally

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
BMAPC Bone Marrow Aspirate No, (Bill Only) No
BMBPC Bone Marrow Biopsy No, (Bill Only) No
BMCPC Bone Marrow Clot No, (Bill Only) No
DCALP Decalcification No, (Bill Only) No
PBPC Peripheral Blood No, (Bill Only) No
PBTC Peripheral Blood, TC No, (Bill Only) No
PPPC Particle Prep No, (Bill Only) No

Reporting Name

Hematopathology Consult

Specimen Type

Varies

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Ambient

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Clinical Information

Diagnosis of a hematologic disease requires thorough and accurate morphologic examination of peripheral blood and bone marrow as well as interpretation of ancillary testing results (eg, cytochemistry, immunohistochemistry, flow cytometric immunophenotyping, chromosome analysis, and fluorescence in situ hybridization and molecular testing) by a highly qualified hematopathologist. With recent advent of new understanding and treatment options, more ancillary tests are available. Efficient utilization and accurate interpretation of these tests are crucial for patient care. These tests can assist in rendering an accurate diagnosis and could provide prognostic prediction and potential indication or guidance of therapy.

Reference Values

An interpretive report will be provided.

Day(s) Performed

Monday through Saturday

Report Available

3 to 7 days; Cases requiring additional material or ancillary testing may require additional time.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

85007 (if appropriate)

85060 (if appropriate)

85097 (if appropriate)

88305 (if appropriate)

88311 (if appropriate)

Test Classification

Not Applicable

Method Name

Medical Interpretation

Specimen Minimum Volume

See Specimen Required