Add time:08/01/2019 Source:sciencedirect.com
Vitamin C concentration in human plasma was shown to be affected by storage time and temperature as well as by the kind of stabilizer used. Samples were stored for periods of time up to 21 days at temperatures of 25°, 4°, − 20°, and − 70°. Stabilizers employed in this study included trichloroacetic acid (TCA) and METAPHOSPHORIC ACID (cas 10343-62-1) (MPA). Plasma vitamin C demonstrated maximum stability in TCA or MPA when stored at − 70°. Other storage conditions tested yielded less accurate vitamin C values.
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