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Blood levels and Plasma levels

  1. Sep 18, 2008 #1
    In my physiology examination, I came across this question:
    Find the Glomerular Filtration Rate (GFR), when
    Urine Concentration of Urea (U) = 70 (I dont remember the exact values, but it is of no importance),
    Urine flow rate (V) = 1ml/min
    Blood level of Urea = 20 ( or something)
    In Guyton(Physiology text book), The formula was given as GFR = U*V/P
    P is Plasma level of Urea.
    My doubt is whether I should convert the Blood Conc into Plasma Conc ( as Blood is 5 L while Plasma is 3 L) and then continue with the problem?
  2. jcsd
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