Waugh developed an equation for estimating the amount of water is present in a volume of serum. The author is from the University of Kentucky.
(1) total lipid concentration in grams per dL (not mg)
(2) total protein concentration in grams per dL
mL of water in 100 mL serum =
= 99.1 - (1.03 * (total lipid concentration in g/dL)) - (0.73 * (total protein concentration in g/dL))
Since 1 mL of water is approximately 1 gram:
percent water as weight per volume =
= (mL of water in 100 mL serum) / (100 mL) * 100% =
= (mL of water in 100 mL serum)
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