Urine acidity (pH)

Urine acidity is the pH value of urine, and right reflects the ability of the kidney to regulate the acid-base balance of body fluids. Normal people have a urine pH of 4.6-8.0 (average 6.0) under normal dietary conditions. The pH value of urine is mainly determined by the secretion of H+ from renal tubules, the secretion of titratable acid, the formation of ammonium, and the reabsorption of bicarbonate. The most important one is acidic phosphate-alkaline phosphate or relative content, such as the former. More than the latter, the urine is acidic, but the reverse is neutral or alkaline. Basic Information Specialist classification: urinary examination classification: urine / kidney function test Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Acidosis, chronic glomerulonephritis, gout, diabetes and other acid excretion; respiratory acidosis, due to carbon dioxide retention, urine is more acidic. Normal value: Random urine pH: 4.6-8.0 Most specimens pH: 5.5-6.5 Above normal: Frequent vomiting, loss of stomach acid, taking bicarbonate, urinary tract infection, excessive ventilation and loss of carbon dioxide excessive respiratory alkalosis, urine is alkaline. negative: Positive: Tips: Try to use fresh morning urine when doing this check. The urine that is randomly selected is preferably mid-stage urine. Menstrual women are not suitable for this examination. Normal value Random urine PH4.6-8.0, most specimens were 5.5-6.5, with an average of 6.0; Normal urine titratable acidity is 10-15mmol / L, 20-40mmol / 24h. (Note the specific reference value depends on each laboratory.) Clinical significance 1, urine PH reduces acidosis, chronic glomerulonephritis, gout, diabetes and other acid increase; respiratory acidosis, due to carbon dioxide retention, urine is more acidic. 2, increased urine pH, frequent vomiting loss of stomach acid, taking bicarbonate, urinary tract infection, excessive ventilation and loss of carbon dioxide excessive respiratory alkalosis, urine is alkaline. Urine PH is generally parallel to the pH of the extracellular fluid, but the following special circumstances should be noted. (1) When hypokalemia-induced alkalosis, the uric acid is increased due to the increase of H+ secretion in the renal tubule; on the contrary, when hyper-potassium acidosis occurs, the K+ is increased, and the H+ secretion of the renal tubule is decreased, which may be acidic urine; (2) When the proteus urinary tract infection occurs, it is alkaline urine due to decomposition into ammonia. (3) In renal tubular acidosis, the exchange capacity of H+ and H+ and Na+ decreased due to renal tubular formation. Although the body was markedly acidosis, the urine pH was relatively alkaline. The acid load test is to accurately determine the urine pH value after giving the patient an acid load, which is helpful for the diagnosis and classification of renal tubular acidosis. Low results may be diseases: high metabolic alkalosis results may be diseases: metabolic acidosis precautions Note during inspection: Fresh morning urine should be used as much as possible during this examination. The urine that is randomly selected is preferably mid-stage urine. Not suitable for the crowd: menstrual women. Inspection process Inspection process: As with routine urine tests, use a clean, dry container with a disposable urine cup and urine test tube provided by the hospital. Take about 10 ml of urine and send it to the designated inspection window of the hospital. Not suitable for the crowd Menstrual women. Adverse reactions and risks no.