CA 19-9 Tumour Marker Blood Test (Cancer Antigen 19-9)

The CA 19-9 blood test measures a tumour marker associated with certain cancers. It is used to support monitoring and treatment assessment but is not intended to diagnose or screen for cancer.

  • Doctor reviewed
Sample
Blood
Collection
Venous draw at clinic or nurse home visit
Results in
1 day
Biomarkers
1
Doctor reviewed
Yes
Tests for
  • CA 19-9

Test specifications

Sample type
blood
Collection method
venous draw at clinic or nurse home visit
Turnaround time
1 day
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 19-9

About this test

The CA 19-9 blood test measures the level of Cancer Antigen 19-9 (CA 19-9), a tumour marker that may be elevated in certain cancers and some non-cancerous conditions.

The CA 19-9 tumour marker blood test is not a diagnostic test or a general screening test for cancer. It is primarily used alongside other clinical investigations to monitor patients with a known condition, assess response to treatment, or check for changes over time.

A raised CA 19-9 result does not necessarily mean that cancer is present. Levels may also be increased by a range of benign conditions, including inflammation, gallstones, bile duct obstruction, pancreatitis and liver disease.

Results should always be interpreted by a doctor alongside your symptoms, medical history, imaging scans and any other relevant laboratory tests.

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 6.0/10

    Requires a venous draw at a clinic; a home nurse visit is offered; results within 2 days.

  • Results and follow-up 8.5/10

    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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