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I want someone to make a strip test for measuring free-radicals in the body via a urine test such as the following, which was a from a patent application that was never granted:
It comprises a filter paper impregnated with a known reagent, thiobarbituric acid, in the presence of an organic acid the acidity of which is close to that of acetic acid, generally used in the anhydrous form to dissolve the thiobarbituric acid, at a pH of about 1.0 to 3.0, to avoid side reactions. Thiobarbituric acid reacts with malondialdehyde (MDA) to produce a red chromogen.
Of the organic acids tested, glycolic acid produces a high sensitivity in the test, and produces a highly characteristic red ring in the region of the deposited drop, while the ring remains white when the urine is free of MDA. Other acids such as fumaric acid, citric acid or tartaric acid cannot produce sharp characteristic rings.
Filter paper strips are impregnated with a solution containing 0.5% by weight ...
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