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It normally ranges from 1.003 to 1.035; lower values indicate that the urine is dilute, while higher values mean that it is concentrated. A urine specific gravity that consistently remains around 1.010 (isosthenuria) can indicate kidney damage, as it suggests that the kidneys have lost the ability to control urine concentration. [39]
Measurement Lower limit Upper limit Unit Urinary specific gravity: 1.003 [1] [2]: 1.030 [1] [2]: g/mL Urobilinogen: 0.2 [2]: 1.0 [2]: Ehrlich units or mg/dL : Free catecholamines, dopamine ...
Acid phosphatase (EC 3.1.3.2, systematic name phosphate-monoester phosphohydrolase (acid optimum)) is an enzyme that frees attached phosphoryl groups from other molecules during digestion. It can be further classified as a phosphomonoesterase .
[1] [2] Hyperkalemia can cause an abnormal heart rhythm which can result in cardiac arrest and death. [1] [3] Common causes of hyperkalemia include kidney failure, hypoaldosteronism, and rhabdomyolysis. [1] A number of medications can also cause high blood potassium including spironolactone, NSAIDs, and angiotensin converting enzyme inhibitors. [1]
Increasing the urine pH to a value higher than 7.0 may increase the risk of calcium phosphate stone formation, though this concept is controversial since citrate does inhibit calcium phosphate crystallization. Testing the urine periodically with nitrazine paper can help to ensure the urine pH remains in this optimal range. Using this approach ...
It was this multistage test — a description of which was first published in 1963 — that became known as the Bruce Protocol. In the initial paper, Bruce reported that the test could detect signs of such conditions as angina pectoris, a previous heart attack, or a ventricular aneurysm. Bruce and his colleagues also demonstrated that exercise ...
One Kunitz unit is defined as the amount of enzyme added to 1 mg/ml salmon sperm DNA that causes an increase in absorbance of 0.001 per minute at the wavelength of 260 nm when acting upon highly polymerized DNA at 25 °C in a 0.1 M NaOAc (pH 5.0) buffer.
The lumen's pH (~4.5–5.0) [3] is optimal for the enzymes involved in hydrolysis, analogous to the activity of the stomach. Besides degradation of polymers, the lysosome is involved in cell processes of secretion, plasma membrane repair, apoptosis, cell signaling, and energy metabolism. [4] Lysosomes digest material.