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LabCorp and Quest are both open and taking extra precautions to service Walk-In Lab customers. 

In the near future Walk-In Lab will be providing Quest COVID-19 Antibody testing.  Learn more.

Rectal and Colon

Rectal and colon cancer, also known as colorectal cancer, is cancer that starts in the rectum or colon. It appears when there is an out of control growth of abnormal cells within the layers of tissues that line the colon. Several tests used for this cancer is the Occult Blood, Fecal, Immunoassay Test, the CEA, and CA 19-9. Thank you for browsing our selection of Rectal and Colon blood tests and panels. Shop additional Cancer Screening Tests confidentially and order online without insurance or a doctor's note.

Choose One Lab: LABCORP (LC) or QUEST (QD) or ALL

Walk-In Lab is contracted with LabCorp (LC) and Quest Diagnostics (QD) for routine lab testing. Please choose LC or QD to complete your order. If you prefer to receive a kit by mail for specimen collection, please see our Home Test Kits. LC and QD tests must be ordered separately.

LabCorp: Online lab testing is prohibited in MA, MD, NY, NJ and RI.

Quest Diagnostics: Online lab testing is prohibited in NY, NJ and RI.

  • Occult Blood, Fecal, Immunoassay Test

    An Occult Blood, Fecal, Immunoassay Test is the qualitative detection of fecal occult blood.
    More Info
  • Serotonin Blood Test

    The Serotonin Blood Test is ordered to help diagnose and monitor treatment for a serotonin-secreting carcinoid tumor.
    More Info
  • Carbohydrate Antigen (CA) 19-9 Blood Test

    The Carbohydrate Antigen (CA) 19-9 Blood Test is used primarily to monitor response to pancreatic cancer therapy and to monitor recurrence, sometimes to help diagnose pancreatic cancer.  However, CA 19-9 may also be elevated with the presence of other cancers.
    More Info
  • Carcinoembryonic Antigen (CEA) Blood Test

    This CEA Blood Test measures the protein in the blood called carcinoembryonic antigen (CEA). This protein can be found on some cancer cell types. 
    More Info
  • Methylated Septin 9 Blood Test, ColoVantage

    The Methylated Septin 9 Blood Test is used to detect circulating Methylated DNA from the Septin 9 (SEPT9) gene.  It is also used in the detection of colorectal cancer in patients non-adherent to current testing methods.
    More Info

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