kidney

UBERON:0002113 · reniculate kidney

Paired organ filtering plasma to form urine; regulates electrolytes, acid-base status, blood pressure, and erythropoietin production.

Where it sits

• part of renal system
• contains nephron tubule
• contains renal glomerulus

Markers that report on it

• Creatinine cleared by main
  The kidneys filter creatinine out of the blood and remove it in urine, so it builds up when they fail.
• Estimated glomerular filtration rate cleared by main
  eGFR is a test used to check how well the kidneys filter the blood.
• Urea nitrogen cleared by main
  The kidneys remove urea nitrogen from the blood, so high BUN can mean the kidneys are not working well.
• Urate cleared by main
  The kidneys filter uric acid out of the blood and remove about two-thirds of it.
• Calcium, total regulated by
  Under PTH's direction, the kidneys keep calcium in the blood instead of losing it in urine.