well Iron is lost in urine and feces. So im gonna say yes.
no
The kidneys
urine
iron
The kidneys can either re-absorb water back into the body or excrete more water outside of the body. This is regulated by hormones such as ADH and aldosterone.
Partially, yes. Most of the pH is regulated by respiration (how fast you breath) with the kidneys providing some fine tuning of the buffering ability of the blood.
iron
Antidiuretic hormone (ADH) is regulated by the pituitary gland. The anitidiuretic hormone maintains blood pressure and controls incoming water through the kidneys
Kidneys (regulated by the pituitary gland released neurotransmitter ADH)
GFR is regulated by having the technicians doing the tests be educated in cleanliness and proper hygiene. The person who analyzes the test is also trained how to analyze the blood. GFR is the Glomerular Filtration Rate. It measures how well the kidneys are processing waste.
The pH of the blood is regulated by short term changes mediated by altering the rate of respiration and on the longer term by filtering of the blood in the kidneys.
Under normal conditions, the water and electrolyte content of the body is regulated by the kidneys
gold and copper and zinc and sliver and iron, it can be any of those.