Given That a Normal Albumin Is Approximately 40 G/L, a Normal

question 17

Multiple Choice

Given that a normal albumin is approximately 40 g/L, a normal glucose is approximately 900 mg/L, and a normal BUN is approximately 100 mg/L, why is albumin (which has a much higher concentration) not considered in the equation to estimate osmolality?

• A)Albumin concentration is so much higher than other components of the blood stream, its effect on osmolality is considered constant and thus not included in the calculation.
• B)When considering the molecular weight of albumin, the high concentration becomes a very small number of moles, causing albumin not to be included in the calculation.
• C)Albumin controls the movement of fluids in the body and does not influence osmolality.
• D)Albumin is a transport protein in the blood stream, and osmolality is only influenced by components that are being transported by albumin, not albumin itself.

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