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'While you wait' PSA test now available
Although the Department of Health position is currently against screening for
prostate cancer, there is growing interest in the early detection of the disease. In both
Germany and the USA, there is already an effective screening and diagnostic service.
The most sensitive test available is the prostate specific antigen (PSA) blood
test. The value of the PSA test lies in its simplicity, objectivity, reproducibility, lack
of invasiveness and low cost.
The present method of carrying out a PSA test in the UK is to take a blood
sample and have it analysed in a pathology laboratory. It typically takes about a week for
the results to become available and the cost of the laboratory work is at least £10.
Now, products are becoming available which make the test simpler, quicker and
cheaper. Near Patient Technologies, based in Suffolk are exclusively distributing a PSA
testing kit which is designed to be used in a GP's surgery. The blood sample is derived from
a finger prick. Colour changes on a special paper indicate one of three conditions; a PSA
less than 4 - the patient does not appear to have prostate cancer; a PSA between 4 and 10 - it is
possible that the patient has the disease, further tests are required; and a PSA greater than 10 -
it is rather likely that the patient has the disease and should be seen as a matter of urgency by
a consultant urologist.
It is likely that we shall see products such as this one being used in doctors'
surgeries in the near future. There are cost savings with the immunographic paper test
costing about £2. There are time savings both for the doctor and the patient. The
test can probably be administered in two or three minutes and, of course, the week's delay in
waiting for a result can be eliminated.
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