Learn why Cancerguard™ is right for your patients
Exact Sciences is growing thought leadership for the Multi-Cancer Early Detection (MCED) field
Our Science
Recent Publications and Abstracts
Talks and Podcasts
Resulting
Get started today

Frequently asked questions
Test Details
A test development study for the Cancerguard test including 590 participants with one of 19 cancer types (excluding breast and prostate cancer) and 2,434 participants with no cancer found a sensitivity of 64.1% [95% CI: 60.1%, 67.8%] with an overall specificity of 97.4.% [95% CI : (96.7%, 97.9%)]. In this case control study, individual cancer type sensitivities ranged from 23.1% to 80.0% for cancer types that had at least 10 cases.
All data presented here was generated from case-control studies of patients who were already known to have cancer or to be healthy (no active cancer or suspicion of cancer). These sensitivity numbers may not accurately reflect the test performance in a clinical setting. Real-world sensitivity may be lower compared to case-control data.
Intended Use Population
The Cancerguard test is intended for adults of either sex, ages 50-84 years who have had no known cancer diagnosis within the preceding 3 years.
The test is not indicated for screening of breast cancer, prostate cancer, or pre-cancerous lesions.
It is important to use your clinical discretion when identifying the right patients for testing.
The Cancerguard test is not intended for adults with a history of cancer or hematological malignancy in the last three years.
Given the potential for follow-up imaging (radiology) scans for positive results and the potential need for a CT with iodine-based IV contrast, patients with a history of adverse reactions to iodine-based IV contrast may not be appropriate candidates for this testing.
Consideration should be given to women who are, could be, or may become pregnant as a positive Cancerguard test may be followed up by imaging scans that may use ionizing radiation.
It is important to use your clinical discretion when identifying the right patients for testing.
Results of a test development study showed that the Cancerguard test can find signals from many solid tumor types and some blood cancers. There were 21 types of cancers included in the study: lung, breast, colorectal, prostate, uterus, pancreas, head and neck, kidney, stomach, bladder, esophagus, liver, anus, ovary, cervix, thyroid, vulva, small intestine, testis, Non-Hodgkin’s Lymphoma, and multiple myeloma.
While these are the 21 types of cancers included in the study, the Cancerguard test may potentially detect a cancer signal from cancers not specifically evaluated or validated during development.
The Cancerguard test is not indicated for screening of breast and prostate cancer. This test is not a replacement for existing recommended cancer screening or diagnostic modalities for cancer.
Test Ordering
Sample Collection
The Cancerguard test requires an Exact Sciences Blood Specimen Kit labeled with Cancerguard™ for collection and transport of blood specimens to the performing laboratory.
The kit contains the appropriate blood collection tubes and packing materials needed for specimen collection and shipment.
Each kit is a single unit. Tubes from other kits should not be used.
To order blood specimen kits for your office, please contact our Customer Care Canter at
No. The blood specimen kits and tubes must be stored at room temperature (15-25 °C, or 59-77°F). Please do not store the blood specimen kit or tubes in the refrigerator or freezer.
Improper storage conditions, such as exposure to temperatures outside the recommended range may compromise specimen integrity and could possibly lead to inaccurate or invalid test results.
After collection, ship specimens in the blood specimen kit, which includes two temperature-control gel packs to maintain the appropriate temperature.
The kits are designed to have a shelf life of up to 12 months, but expiration dates may vary. You may receive kits with less than 12 months prior to expiration.
Always check the expiration date labels on each kit before proceeding with specimen collection and discard any expired kits.
The Cancerguard test uses blood from specimens collected in LBgard® Blood Tubes, which are included in the blood specimen kit.
We do not accept blood collected in any other tubes or any other sample types.
To ensure that enough blood is available to complete the Cancerguard test, four (4) LBgard® Blood Tubes must be collected.
Each LBgard Blood Tube should be completely filled with 8.5 ml of blood per tube (total 34 ml).
Please fill each LBgard Blood Tube to the black line marked on the label or until the vacuum has been exhausted.
It is important to prioritize filling tubes completely to the black line marked on the label or until the vacuum has been exhausted. Do not underfill multiple blood tubes to draw some blood in all 4 tubes.
If you are collecting blood only for the Cancerguard test, tubes do not need to be drawn in any specific order.
If you are collecting blood for the Cancerguard test in addition to other tests (CBC, BMP, Lipid Panel, etc.), the LBgard® Blood Tubes should be filled after EDTA tubes and before glycolytic inhibitor tubes. If a heparin tube precedes LBgard tubes in the draw order, it is recommended that a non-additive or EDTA tube be drawn as a waste tube before collecting in LBgard tubes. Please refer to the
Yes. Since the blood specimen must be processed within 72 hours at Exact Sciences Laboratories, patients should have their blood drawn for the Cancerguard test Monday through Friday only.
For Friday collections, check with FedEx to find out the last pickup time in your area prior to collecting. Ensure blood is collected prior to the last pickup time.
Please ship kits to the laboratory the same day specimens are collected using FedEx Priority Overnight delivery.
Do not collect and ship specimens on weekends and on observed holidays.
Shipping
Since blood specimens must be processed within 72 hours of the blood draw, they should be shipped to the laboratory on the same day as collected, Monday through Friday, and not on holidays.
For Friday collections, check with FedEx to find out the last pickup time in your area prior to collecting.
The laboratory can receive specimens for the Cancerguard test Monday through Saturday.
The laboratory cannot receive specimens on Sundays or holidays.
No. The Exact Sciences Blood Specimen Kit labeled with Cancerguard includes two temperature-control gel packs.
Do not remove these gel packs from the kit.
Do not use any other ice packs or dry ice for shipping specimens to the laboratory.
Lab Process & Testing
Results & Follow Up
The Cancerguard test generates positive (cancer signal detected) or negative (no cancer signal detected) results.
In some instances, QC failure or insufficient clinical material may lead to an invalid test. In the case of an invalid test, new blood specimens will need to be collected to re-initiate the testing process.
No. The individual biomarker results will not be made available.
If you have further questions about this information, consultations with our laboratory directors are available. Please contact our Customer Care Center atResults will be sent directly to you based on your ordering method:
- Paper Test Requisition Form: Results sent via secure fax to the number provided.
- EpicCare Link: Results available via EpicCare Link I
- Exact Sciences Provider Hub (ESPH): Results available via ESPH
- Electronic Medical Record (EMR): Results returned via your EMR system
A positive Cancerguard test result means the blood test identified a signal that may indicate the presence of cancer.
A positive Cancerguard test result alone does not confirm the presence of any cancer. False positive results can occur.
Follow-up clinical evaluation by a healthcare provider including routine labs followed by imaging are needed to locate and confirm a diagnosis of cancer or determine that cancer is not present.
A positive test result alone does not confirm the presence of any cancer. False positive results can occur. Further clinical evaluation and follow-up imaging are needed to locate and confirm a diagnosis of cancer or determine whether the cancer is not present.
There are no established national guidelines for imaging following a positive Cancerguard test result. Exact Sciences has developed a proposed clinical algorithm for imaging-based diagnostic resolution following a Cancerguard test based on published expert clinician opinion and results from an exploratory, prospective, interventional study. To request this resource, contact your regional Medical Science Liaison, the
Briefly, in the absence of a clear suspicion of cancer, based on symptoms, other testing, and/or medical history that points to targeted imaging, follow-up imaging may include CT with IV contrast of the neck (soft tissue), chest, and abdomen/pelvis.
If results of the CT imaging are negative for cancer or any result as “indeterminate” patients may need follow-up with traditional whole-body head-to-thigh 18F-FDG PET-CT scan.
Additional imaging or diagnostic testing may be recommended at the discretion of the ordering provider, based on a patient’s clinical presentation.
Common CPT codes for the imaging scans in the proposed imaging-based diagnostic resolution pathway:
CT with IV Contrast-Soft Tissue Neck: 70491
CT with IV Contrast-Chest: 71260
CT with IV Contrast-Abdomen/Pelvis: 74177
PET-CT: (Skull to Thigh with 18-FDG): 78815
These codes listed are provided for informational purposes only and are not intended to be an all-inclusive list, nor do they constitute reimbursement or legal advice. Ordering providers are responsible for determining follow-up testing and imaging based on their clinical assessment of the patient, and for submitting accurate and appropriate claims for services. Payer policies will vary and should be verified prior to treatment for limitations on diagnosis, coding, or site of service requirements.
A negative Cancerguard test result means that the test did not identify a cancer signal. A negative result does not rule out the presence of cancer of any type. False negative results can occur.
Results should be interpreted in the context of a patient’s medical history, clinical signs, and symptoms.
The Cancerguard test is not a replacement for existing recommended cancer screening or diagnostic tests. Current recommended screening for cancer should also be followed.
The Cancerguard test may be offered to patients as part of their routine care.
The Cancerguard test is designed to complement recommended routine screening. It is not intended to replace these important single-cancer screening tests.
In the DETECT-A study, the use of a multi-cancer early detection test along with recommended routine screening was shown to double the number of cancers first detected through screening.
If follow-up imaging scans do not identify a potential cancer, it may mean the Cancerguard test produced a false positive.
Current recommended screening for cancer should be followed. Repeat Cancerguard test may be offered to patients as part of their routine care.
Billing
Care Navigation
- Ready-to-use workflows to help care team manage next steps for diagnostic resolution following a Cancerguard test
- Education with information and guidance on follow-up imaging
- Access to Exact Sciences Medical Sciences Liaisons (MSLs) and laboratory medical directors for additional clinical guidance and support
Patient Imaging Reimbursement Program
Have questions?
References
- Cancerguard Clinical Validation Report July 2025
- Data on file. Cancerguard Test Development Study. 2025. Exact Sciences, Madison, WI
- Data on file. Exact Sciences Multi-Cancer Early Detection (MCED) Test Clinical Validation Report July 2025.
- Lennon AM, Buchanan AH, Kinde I et al. Feasibility of blood testing combined with PET-CT to screen for cancer and guide intervention Science. 2020;369(6499).
- Lebech AM, Gaardsting A, et al. Whole-body 18F-FDG PET-CT is superior to CT as first-line diagnostic imaging in patients referred with serious nonspecific symptoms or signs of cancer: A randomized prospective study of 200 patients. J Nucl Med. 2017;58:1058-1064.
- Kisiel JB, Ebbert JO, Taylor WR et al. Shifting the cancer screening paradigm: Developing a multi-biomarker class approach to multi-cancer early detection testing. Life (Basel). 2024; 14: 925. https://doi.org/10.3390/life14080925.