Biomedical Laboratory Science

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Thursday, September 21, 2017

Tumor Marker Tests Overused in Primary and Secondary Care !

A tumor marker is a biomarker found in blood, urine, or body tissues that can be elevated by the presence of one or more types of cancer. The vast majority of tumor marker tests in primary and secondary care may not be necessary as the tests assisted with a cancer diagnosis in just 2% of patients.

Tumor markers are molecules, which may be present in higher than usual concentrations in the tissue, serum or other body fluids of patients with cancer. There are many different tumor markers, each indicative of a particular disease process, and they are used in oncology to help detect the presence of cancer. A tumor marker can be used to aid diagnosis in specific situations but testing for more than one marker is not recommended.

Scientists at South West Wales Cancer Centre (Cardiff, UK) examined the number of multiple tumor marker requests from primary and secondary care over a six-month period within Abertawe Bro Morgannwg University Health Board (Bagain, Neath Port Talbot, Wales). Multiple requests were defined as more than one tumors marker for a patient in a two-week period. The team looked at how many patients with multiple tumor markers measured were subsequently diagnosed with cancer, and whether the markers assisted with the diagnosis.


Common tumor markers used in the diagnosis of cancer




Source: LabMedica

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