run something into something. 1. to guide or route something, such as a wire or a pipe, into something or a place. The worker ran the circuit into each room. He ran in the circuit as specified. 2. to guide something into something; to drive or steer something into something else.
A change of color to a blue-black or purple color suggests that starch is present. If there is no change in color, this suggests no starch is detectable. Note the change of the iodine to black on the potato (right) but not the apple (left). (10% Tincture of iodine.) Potato contains starch, but apple does not.
Despite the popularity of the iodine patch test, no research supports its ability to measure iodine levels. That being said, here are the steps to perform it: Get a solution or tincture of iodine (the orange solution, not the clear one. Paint a 3-inch by 3-inch square on your abdomen, inner thigh or inner forearm.