Biochemistry 3386B Lecture Notes - Maple Syrup Urine Disease, Diabetes Insipidus, Hyperemesis Gravidarum
27 Apr 2013
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Document Summary
Unique material for producing many answers without stress to the patient. Urine produced by an ultrafiltration process of blood flowing through the glomerulus in the glomerular nephrons. Ultrafiltrate contains: water, waste products, small molecules that passed through the membrane pores. Ultrafiltrate is then also passed through: proximal tubule, loop of henle, distal tubule, collecting ducts, bladder. Re-absorption of: water, glucose, salts (electrolytes) There are other products that are secreted into the filtrate or re-absorbed back into the plasma during passage through the loh. This process is aided by osmotic gradients and hormonal regulation (ie. adh and water reabsorption) Random: refers to a single urine sample (ie. the preferred 1st morning voiding) store at room temperature (as long as the processing is done in 2 hours) Timed: several specimens collected and pooled together over a time interval (24 or 8 hours are the most common (store at 4 degrees)
