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Test Mnemonic EXHR Hematologic Disorders, DNA and RNA Extract and Hold

Useful For

Reserving nucleic acid on any specimen for which molecular analysis requiring DNA or RNA may be necessary at a future date, ensuring that adequate material for testing is available

Testing Algorithm

DNA and RNA will be extracted from the specimen and stored at -80° Celsius for 1 year from the date the extraction process was performed. A report of "Performed" will be sent and a $75.00 processing fee will be assessed. To request molecular testing from the Molecular Hematopathology Laboratory's test menu, call 800-533-1710. Additional charges will be assessed for testing performed.

Method Name

Nucleic Acid Extraction

Reporting Name

DNA and RNA Extract and Hold

Specimen Type

Varies


Specimen Required


Specimen must arrive within 72 hours of draw. Draw and package specimen as close to shipping time as possible.

 

Submit only 1 of the following specimens:

 

Specimen Type: Blood

Container/Tube:

Preferred: Lavender top (EDTA)

Acceptable: Yellow top (ACD)

Specimen Volume: 4 mL

Collection Instructions:

1. Invert several times to mix blood.

2. Send specimen in original tube.

3. Label specimen as blood.

 

Specimen Type: Bone marrow

Container/Tube:

Preferred: Lavender top (EDTA)

Acceptable: Yellow top (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

Blood, Bone Marrow: 1 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Refrigerated (preferred) 72 hours
  Ambient  72 hours

Reference Values

Not applicable

Day(s) and Time(s) Performed

Monday through Saturday

Specimens received Sunday will be processed Monday.

Performing Laboratory

Mayo Medical Laboratories in Rochester

LOINC Code Information

Test ID Test Order Name Order LOINC Value
EXHR DNA and RNA Extract and Hold In Process

 

Result ID Test Result Name Result LOINC Value
MP035 Specimen Type 31208-2
41938 DNA/RNA Extract and Hold Result No LOINC Needed
41937 DNA/RNA Extraction No LOINC Needed

Test Classification

N/A

Forms

1. Hematopathology Patient Information (T676) in Special Instructions.

2. 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)