الفهرس 
Material and methodsOnly 14 pages are availabe for public view
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Abstract
By conducting this research in the same manner as the
glucose tolerance test it has been possible to
distinguish the presence of three types of ascorbic
acid tolerance curves for normal individuals.
Each curve reflects the vitamin C status of the body
i.e. the degree of vitamin C saturation.The rate of
utilization of the vitamin in the three cases of
vitamin C tolerance curves has been observed and it
has been concluded that there is an increased rate
of utilization of ascorbic acid in the undersaturated
individuals with Virtually little or no
ascorbic acid excretion i.e a low rate of urinary
excretion. While in the moderately saturated individual
there is a lower rate of uptake by the tissues and a
higher rate of urinary excretion.In the saturated
individuals exhibiting Type (3) tolerance curves,
there is no detectable rate of utilization from the
curves (no decline ,With persisting rise),since the
tissues are saturated and will not accept ascorbic
acid presented to it.On the other hand there is a very
high rate of urinary excretion since the rate of
intestinal absorption of the vitamin is equal or less
than the rate of the vitamins excretion.
(us)
CONCLUSION ,
If the tissue ascorbic acid content is low then
upon administration of Vitamin C there will be a rapid
flow of the vitamin from the plasma to the tissues i,e
a high rate of utilization and virtually little or no
excretion of the vitamin in the urine i.E a decreased
rate of urinary excretion.On the other hand if the
individual is relatively saturated then the rate of
tissue uptake of the vitamin will exhibit itself only
after absorption is complete,followed by a high rate of
urinary excretion with a fall in the rate of both
uptake and excretion at the end of the experimental
period. In saturated persons there is avery high rate
of urinary excretion with no rate of utilization as
the tissues are saturated and will not take up any
vitamin C presented to it,i.e no rate of utilization.