The two main substances found in urine are water and waste products, such as urea, creatinine, and uric acid.
The amount of substance that exceeds the tubular maximum will be found in the urine.
Phosphorus was the element found in the urine of a scientist named Hennig Brand in 1669. Brand had been trying to extract gold from urine by boiling it down until he obtained a glowing substance, which turned out to be phosphorus.
When proteins undergo deamination, the resulting nitrogen-containing waste product is ammonia. Ammonia is converted into urea in the liver, and then excreted in the urine.
Urine is an example of a protein-free body substance. Under normal conditions, urine should not contain proteins.
nion,isotopes and urine
urea
The most logical answer would be urine, and it is!
urea
acetone
The amount of substance that exceeds the tubular maximum will be found in the urine.
Uric acid is a by product of protein digestion and can be found in the urine.
Benzodiazepines: up to 6 weeks with high level use Urine sample results are usually reported as positive (substance is found) or negative (no substance is found).
Ions and nutrients
Phosphorus was the element found in the urine of a scientist named Hennig Brand in 1669. Brand had been trying to extract gold from urine by boiling it down until he obtained a glowing substance, which turned out to be phosphorus.
Mostly urine performing time less then two hours . If urine perform after two hour or more late then bacteria growth in the urine and urine container. when this urine perform time nitrites positive because late perform urine bacteria growth. But not found of leukocyte in microscopically in this urine . this urine repeated and perform under timing then not positive nitrites and not found in leukocyte in urine. Airf Hussain (M.Sc. Hematology&Blood Bank)
blood
Urine.