![Pregnancy Test Controls](http://smcdirectonline.com/cdn/shop/products/7020131x1websmall_c6da7e7a-663a-46f3-b150-7018e8f4f151_{width}x.jpg?v=1609436967)
This hCG positive and negative control set are to be used with our Refuah One Step Pregnancy Cassette and Strip tests. Each bottle is 5 mL. Keep refrigerated.
***Important*** Minimum of second day air must be selected at checkout due to temperature sensitivity. No exceptions.