Test Overview

Test Methodology

CellSearch System

Test Usage

As an aid in monitoring patients with metastatic colorectal cancer.

Reference Range*

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details

Days Test Performed

Monday - Friday

Analytic Time

2 - 3 days

Soft Order Code


MiChart Code

Circulating Tumor Cells by CellSearch (MCTP)



CTC (Circulating Tumor Cells)
Cell Search

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MCTP Molecular Testing Lab

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

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Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Specimen Requirements

Offsite Collection Instructions

Circulating Tumor Cell CellSave collection tubes are available from MLabs. Submit 2 CellSave tubes each containing 7.5 mL of whole blood. Send intact specimen at room temperature. Specimen transport should be arranged so that the specimen is received by MLabs within 72 hours of collection.

Special Handing

Requires Circulating Tumor Cell Collection Kit.

Normal Volume

15 mL whole blood

Minimum Volume

7.5 mL whole blood

Additional Information

Test includes pathologist interpretation of results billed as a separate additional charge. This test is not available without interpretation.

Billing Information

Fee Codes

CPT Code


New York State Approved


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