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VitaChek-C Strips, 50 Test Strips

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Wondering if you get enough Vitamin C through diet and/or nutrient supplements? VitaChek-C strips have been exclusively created by Riordan Clinic for in vitro measurement of urine Vitamin C. Each bottle contains 50 test strips. Start by testing early in the day before eating or taking nutrients. Then test after breakfast and again in the afternoon. Test a final time right before bed. The test strips are designed to be a fast and simple way to check your nutrient levels of Vitamin C daily so that you can adjust your diet or nutrient regimen accordingly.

"Vitamin C is found in three pools, tissues, blood and urine. Vitamin C disappears from the urine early in blood or tissue depletion. Plasma levels fall next and tissue levels (such as in leukocytes and platelets) are the last to fall. The VitaCheck-C strip, on the color chart, reflects levels of vitamin C of 0, 5, 10, 20, 40, 50, and 100 mg/dL. The normal range of urine Vitamin C is greater than 20 mg/dL, and Dr. Riordan preferred levels above 40. A consistent urine Vitamin C of 20 mg/dL or lower may be trying to tell you something." James A. Jackson, MT, Ph.D., Journal of Orthomolecular Medicine, Vol. 20,No. 4, 2005.


*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

Riordan Clinic
DIRECTIONS MUST BE FOLLOWED EXACTLY: 1) Dip reagent strip in FRESHLY collected urine and remove immediately or alternatively, wet the reagent strip by passing through the urine stream. 2) While removing, run the edge of the strip against the rim o
50 Test Strips
Store at temperatures between 15°-30° C. Keep away from sunlight. Replace cap immediately and tightly. Do not remove desiccant from bottle. Read enclosed directions carefully. Do not use strips after 90 days of breaking the foil seal.

4 Reviews Hide Reviews Show Reviews

  • 4
    VitaCheck C

    Posted by Brian Wideman on Jan 17th 2022

    I didn't pay much attention to the instruction that said, "After 30 seconds." For me, every strip turned bright yellow, eventually. When I started following the 30 second rule, I got better results. I checked a new form of liposomal C compared to my traditional ascorbic crystals. I found that my ascorbic turned bright yellow in 30 seconds. The "liposomal" was still light green after 30 seconds. I'm going to keep with my ascorbic crystals.

  • 2
    VitaChek-C Not much of a check

    Posted by John Wright on Jul 27th 2021

    If you aren't testing out at the top end (yellow) then you have a significant lack of vitamin C. Testing out at the highest point (yellow) only indicates you *might* be getting enough Vitamin C - it gives no indication of if you've reached an optimal level. They are easy to use though!

  • 5

    Posted by Denise Walther on Jul 23rd 2021

    Great way to check to visually see if you have adequate levels of Vitamin C.

  • 5
    Vitachek-C Strips

    Posted by Rob Gilmor on Mar 24th 2021

    A convenient, affordable, painless way to insure Formula 216 or other C supplements are getting your ascorbic acid levels up to where they need need to be for optimum health.