QuestionSBA
QuestionChoice
Urea is reabsorbed in the kidney tubules and contributes to the osmolarity of the medullary interstitial gradient during dehydration. Therefore, it is not an accurate marker of GFR.
10004188
c
Urea
QuestionChoice
Urinary inulin is the gold standard for calculating eGFR as it is freely filtered by the glomerulus, not secreted or reabsorbed in the tubules and is not metabolized or synthesized by the kidneys.
10004186
a
Inulin
QuestionChoice
Sodium is reabsorbed throughout the kidney tubules and would not be a reliable marker of GFR.
10004189
d
Sodium
QuestionChoice
Similar to sodium, water is reabsorbed throughout the kidney tubules and would not be a reliable marker of GFR.
10004190
e
Water
QuestionChoice
Albumin is a protein and therefore is not freely filtered in the glomerulus under normal conditions. Therefore it would not be an accurate marker of GFR.
10004187
b
Albumin
Concept
Chapter
2693
4245
Glomerular Filtration
Topic
168
Renal Physiology
13384
Which of the following substances is measured to provide the most accurate estimate of the glomerular filtration rate?
a