Diagnostic devices, that are commonly used such as strip tests, uses imported plastic raw materials, aside to producing the waste that is harmful for the environment. This innovation uses bamboo twigs as raw material for a more economical diagnostic kit to detect pregnancy. Bamboo twigs contain natural fibers that can intermediate the reaction between sample liquids and indicator reagents. Diagnosis is determined through color changes compared to the standard colors integrated in the kit. This innovation can substitute a rapid diagnostic kit which is still imported.