C-Strips Measure Vitamin C
2020-3-10 · Only vitamin C will turn the blue strips white. The following tests are best performed before meals, preferably before breakfast, and certainly before taking any vitamin C. Tests (1) and (5) are preferred by most persons, and (3) is best for infants. (1) Urine test: Moisten one end of the blue test strip with a touch of urine. As the urine runs up the strip, by capillary action, it should soon turn the test paper white for almost as far as the urine …
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