Dropper Urinalysis Dipstick Control Monitor the performance of visual and instrument readings of urine dipsticks by dropping the control directly onto the dipstick. Features an easy-to-use dropper bottle for simple dispensing and maximum use. We include values for all dipstick analytes plus microalbumin and creatinine, and qualitative results for hCG early pregnancy detection test methods. Dropper Urinalysis Dipstick Control is designed for use with most urinalysis reagent strips. It can also be used for confirmatory tests and refractometry.