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尿液的生成由肾小球滤过、肾小管和集合管的再吸收和分泌三个步骤完成。肾脏不同部位有病变,该部位的功能就异常。肾功能检查的目的就是了解肾脏病变的主要部位及损伤程度。因此肾功能检查可分为:①肾小球功能检查:这部份包括尿蛋白定性、定量检查,血非蛋白氮(NPN),血尿素氮(BUN),血清肌酐及肾小球滤过率检查。②近端肾小管功能检查:包括酚红排泄试验检查(又称PSP试验),尿糖,尿中Na~+、K~+、Cl~-、HCO_3~-等的测定。③远端肾小管检查:包括尿比重、尿量、尿浓缩稀释试验及酸碱
Urine formation by the glomerular filtration, tubular and collecting tube reabsorption and secretion of three steps to complete. Different parts of the kidney lesions, the site’s function is abnormal. The purpose of renal function tests is to understand the main parts of kidney disease and the extent of damage. Therefore, renal function tests can be divided into: ① glomerular function tests: This section includes the qualitative and quantitative urinary protein, blood non-protein nitrogen (NPN), blood urea nitrogen (BUN), serum creatinine and glomerular filtration rate an examination. ② proximal renal tubular function tests: including phenol red excretion test (also known as PSP test), urine, urine Na ~ +, K ~ +, Cl ~ -, HCO 3 ~ - determination. ③ distal tubal examination: including the proportion of urine, urine output, urine concentration and dilution test and acid-base