Random Urine Collection for Urinalysis. Random urine samples are used for urinalysis, which can screen and diagnose metabolic disorders and urinary tract infections. Your doctor may order urinalysis to determine, for example, the cause of bloody urine, abdominal pains or burning sensations associated with urination.
1 Place potato slices into a large bowl of cold water as you slice. 2  Drain, and rinse, then refill the bowl with water, and add the salt. 3  Let the potatoes soak in the salty water for at least 30 minutes. 4  Drain, then rinse and drain again. 5  Heat oil in a deep-fryer to 365 degrees F (185 degrees C).
Bring the water to a boil over high heat, then reduce heat to medium low. Cover the pot and simmer until potatoes are tenderâabout 15 to 20 minutes. A knife tip inserted into a potato should meet no resistance; if the potato clings to the knife, the potatoes need to cook longer. When potatoes are done, remove from heat and drain immediately.