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Waste products discharged from the digestive tract are composed of up to 75% water, food which is digested but not absorbed, indigestible residue, undigested food, epithelial cells, bile, bacteria, secretion from the digestive tract and inorganic bacteria. Normally an adult human excretes 100-200 grams of feces in a day. Examination…
Microscopic examinations done on fecal sample are shown in Figure 846.1. Collection of Specimen for Parasites A random specimen of stool (at least 4 ml or 4 cm³) is collected in a clean, dry, container with a tightly fitting lid (a tin box, plastic box, glass jar, or waxed cardboard…
Chemical examination of feces is usually carried out for the following tests (Figure 845.1): Occult blood Excess fat excretion (malabsorption) Urobilinogen Reducing sugars Fecal osmotic gap Fecal pH Figure 845.1: Chemical examinations done on fecal sample Test for Occult Blood in Stools Presence of blood in feces which is not…
