PSA numbers
My 81 yr old dad is being treated with a monthly injection and his PSA # went from 70 to 16, what does that mean ?
Hi Gillian,
Thanks for you question. I've asked one of the doctors on our site to offer his thoughts on this - we'll let you know when a response has been posted.
In the mean time, you might want to check out our PSA Testing section, and more specifically, the articles on PSA Test Accuracy and What is a Normal PSA?.
-Dan
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Your dad is being treated with a drug that is blocking the production of testosterone and is most likely an LH/RH analog. (It could also be a newer agent which is an LH/RH antagonist). This drug causes an overstimulation of hormones that result in a decrease in testosterone production. Testosterone is the hormone that allows prostate cancer to grow. Blocking the hormone, results in a control of the prostate cancer, which is reflected by the falling PSA.
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