Blood tests

Blood tests before and during treatment: what abnormal results mean.

Blood tests10 October 2026 9 min
Tumor Markers: When the Test Helps and When It Scares You for Nothing
Why oncologists order CEA, CA 15-3, CA 125, CA 19-9, PSA, AFP and hCG, why they aren’t used to look for cancer and why one result isn’t a reason to change treatment.
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Blood tests10 October 2026 9 min
Blood tests before chemotherapy: what counts you need for a cycle
Which blood tests are done before a chemotherapy cycle, the usual neutrophil and platelet thresholds, why a cycle gets delayed, and when to call your doctor urgently.
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Tumor Markers: When the Test Helps and When It Scares You for Nothing