CA 15-3 (Cancer Marker)

Biomarker blood screening test for breast cancer

  • Doctor reviewed
Sample
Blood
Collection
Venous draw at clinic or nurse home visit
Results in
5 days
Biomarkers
1
Doctor reviewed
Yes
Tests for
  • CA 153

Test specifications

Sample type
blood
Collection method
venous draw at clinic or nurse home visit
Turnaround time
5 days
Biomarkers tested
1
At-home test
No
Doctor reviewed
Yes
Gender focus
Both

What's tested

1 biomarker as listed by Blue Horizon Medicals.

  • CA 153

About this test

Cancer antigen 15-3 (CA 15-3) is a protein (antigen) generated by cells in response to a number of changes within the body. This antigen is classified as a tumour marker because elevated levels may signal the presence of certain cancers, such as breast cancer (but also pancreas, liver, lung and ovary) and also a number of non cancerous conditions. It is important to understand that CA 15-3 tests are not used for diagnosing cancer as there are too many possible causes for an elevated result. The level may help evaluate how a cancer is responding to treatment, but if unexpectedly high in someone not known to have had cancer may trigger further investigation. Generally, variations in CA 15-3 levels assist cancer specialists in determining whether a tumour is stable, growing, shrinking, or has returned.

Description provided by Blue Horizon Medicals.

Our editorial score

Compare Health Test Score
Editorial confidence: 10.0/10

Score breakdown

  • Clarity and documentation 9.0/10

    The listing publishes a detailed description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.

  • Clinical depth 6.4/10

    1 biomarkers, placing it in the 32nd percentile of cancer screening tests we track.

  • Collection convenience 5.0/10

    Requires a venous draw at a clinic; a home nurse visit is offered; results within 5 days.

  • Results and follow-up 7.5/10

    Results are reviewed by a doctor.

  • Trust signals 7.5/10

    Trustpilot 4.2 from 395 reviews; accredited lab (UKAS ISO 15189 partner labs); trading 17+ years.

  • Value for money 7.4/10

    £64.25 against a median of £79.00 for the 19 similarly sized cancer screening tests we track (-19%).

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