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Molecular Normal Blood Control

Microsatellite Instability by PCR, MSI Testing

Test Codes

Epic: LAB8532, Beaker: MOLCON

Department

Molecular Pathology

Specimen Collection Criteria

Collect: One 5 mL whole blood in Lavender-top EDTA tube. (Minimum: 1.0 mL)

Physician Office/Draw Specimen Preparation

Do not freeze specimens. Maintain whole blood at room temperature (20-26°C) or refrigerated (2-8°C) prior to transport.

Preparation for Courier Transport

Transport: Whole blood at room temperature (20-26°C). (Minimum: 1.0 mL whole blood)

Rejection Criteria

• Frozen specimens.
• Unlabeled tubes.
• Specimens collected in heparin (Green-top), clot tubes (Red-top), or SST tubes.

Storage

Specimen Stability for Testing:

Peripheral Blood EDTA:
Room Temperature (20-26°C or 68-78.8°F): 72 hours
Refrigerated (2-8°C or 36-46°F): 72 hours

Specimen Storage in Department Prior to Disposal:

Refrigerated (2-8°C): 7 days

Specimen Storage (DNA post testing):

Frozen (-70 to -80°C): Indefinitely

Laboratory

Royal Oak Molecular Pathology Laboratory

Performed

As received; test run once per week.
Results available in 7-10 business days.

Clinical Utility

The Molecular Normal blood sample is requested when normal tissue is not available from FFPE tissue blocks for MSI Testing Microsatellite Instability by PCR (MSI). The peripheral blood sample can be used as the normal control for this assay.

Contacts

Last Updated

11/10/2021