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Tag: carcinoembryonic antigen

September 1, 2026

Thyroid Cancer Symptoms and Testing: What Blood Tests Can—and Cannot—Detect

Understand the signs that warrant evaluation, how ultrasound and biopsy establish the diagnosis, and when blood tests are useful for monitoring.

Short answer: Most thyroid cancers cannot be detected or ruled out with a routine blood test. Thyroid-stimulating hormone (TSH) and thyroid hormone levels are often normal even when cancer is present. A thyroid-cancer diagnosis generally […]

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August 11, 2026

Cancer Blood Tests and Tumor Markers: Uses, Limits, and Next Steps

How CBC, organ-function tests, PSA, CA-125, CEA, AFP, CA 19-9, and emerging liquid biopsies support cancer evaluation and monitoring—and why no blood test diagnoses cancer alone.

Cancer blood tests include routine blood counts and chemistry tests, selected tumor markers, protein studies, and specialized molecular assays. They can support risk discussions, symptom evaluation, pretreatment baselines, treatment-safety monitoring, response assessment, and follow-up. However, […]

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