If you don't have exact amounts that's fine, I just want close approximations.
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The answer is going to depend on whether or not the amounts of sodium, glucose and urea are normal or not, although sodium is always going to be most of it. Usually if they're normal we're not really concerned about percentages, and even when we are concerned about amounts the usual way of calculating it has to do with serum osmolarity.
However, in general terms, percentage-wise and assuming normal values, practically all of the solute is sodium. Under normal circumstances, there is relatively little free glucose or free urea floating around in the blood, whereas sodium is a normal and needed constituent of plasma. On top of that, when you look at them as solutes, sodium dissociates into Na+ and Cl-, so it makes up 'double' the amount.
I'm assuming this question has something to do with the fact that these are the three constituents of the blood that we sometimes adjust for when calculating serum osmolarity. If that's where it's coming from, think about the equation we use to adjust the Osm. You double the sodium and add glucose/18 and BUN/2.8. If I assume normal values and say sodium is 140, glucose is 100 and BUN is 10, then the serum osmolarity is 280 + 5.5 +3.6 = 289.1. The 280 is 97% of that.
Close enough of an approximation? ;-)
However, in general terms, percentage-wise and assuming normal values, practically all of the solute is sodium. Under normal circumstances, there is relatively little free glucose or free urea floating around in the blood, whereas sodium is a normal and needed constituent of plasma. On top of that, when you look at them as solutes, sodium dissociates into Na+ and Cl-, so it makes up 'double' the amount.
I'm assuming this question has something to do with the fact that these are the three constituents of the blood that we sometimes adjust for when calculating serum osmolarity. If that's where it's coming from, think about the equation we use to adjust the Osm. You double the sodium and add glucose/18 and BUN/2.8. If I assume normal values and say sodium is 140, glucose is 100 and BUN is 10, then the serum osmolarity is 280 + 5.5 +3.6 = 289.1. The 280 is 97% of that.
Close enough of an approximation? ;-)
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"Blessed are the meek, for they shall inherit the earth.
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for theirs is the kingdom of heaven.
"Blessed are you when men revile you and persecute
you and utter all kinds of evil against you falsely on my account.
"Blessed are those who mourn, for they shall be comforted.
"Blessed are the meek, for they shall inherit the earth.
"Blessed are those who hunger and thirst for righteousness,
for they shall be satisfied.
"Blessed are the merciful, for they shall obtain mercy.
"Blessed are the pure in heart, for they shall see God.
"Blessed are the peacemakers, for they shall be called sons of God.
"Blessed are those who are persecuted for righteousness' sake,
for theirs is the kingdom of heaven.
"Blessed are you when men revile you and persecute
you and utter all kinds of evil against you falsely on my account.