PTS Panels General Chemistry Reagent 15 Strips 1710 - (15 Ct) A reagent is a chemical that reacts in a predictable way when mixed with other chemicals. Reagents are used to produce specific changes in substances and to test for the presence of various chemicals in mixtures. PTS Panels test strips and a MEMo Chip allow flexibility in testing with the CardioChek PA. These measure lipids in whole blood. 1 (s), 15 General Chemistry Reagent Vial , 15 Total Count