The 2016 Fayette, Iowa, population is 1,491. There are 1,009 people per square mile (population density). The median age is 22.6. The US median is 37.4. 25.71% of people in Fayette, Iowa, are married. 6.22% are divorced.
During the sweat test , medicine that causes a person to sweat is applied to the skin (usually on the arm or thigh). The sweat is then collected on a paper or a gauze pad, and the amount of salt chemicals in the paper or gauze is measured in a lab. Generally, chloride (sweat chloride) is measured.
Sweat stimulation by pilocarpine iontophoresis lasts five minutes. Sweat collection time cannot exceed 30 minutes. If gauze or filter paper is used, the stimulated area must be 2 inches by 2 inches (4 square inches [in2]). The iontophoresis electrode must cover at least 2 in2. The minimum sample weight using this method is 75 milligram (mg).