Days Set Up
Monday - Friday
Analytic Time

2 - 3 days

Soft Order Code

Test Updated:


CTC (Circulating Tumor Cells)
Cell Search

Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

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

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

CellSearch System

Test Usage

As an aid in monitoring patients with metastatic breast cancer.

Reference Range

Interpretive report provided.

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

Specimen Requirements

Collection Offsite

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.

Normal Volume
15 mL whole blood
Minimum Volume
7.5 mL whole blood

Billing Information

CPT Code
Pro Fee Code

Have More Questions?

Explore our helpful billing resources:

Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.