The medical kits are stowed in a modular locker in the middeck of the crew compartment. If the kits are required on orbit, they are unstowed and installed on the locker doors with Velcro.

Each kit contains pallets. The MBK pallet designators are D, E and F. The D pallet contains oral medications consisting of pills, capsules and suppositories. The E pallet contains bandage materials for covering or immobilizing body parts. The F pallet contains medications to be administered by topical application.

The EMK pallet designators are A, B, C and G. The A pallet contains medications to be administered by injection. The B pallet contains items for performing minor surgeries. The C pallet contains diagnostic/therapeutic items consisting of instruments for measuring and inspecting the body. The G pallet contains a microbiological test kit for testing for bacterial infections.

The diagnostic equipment on board and information from the flight crew will allow diagnosis and treatment of injuries and illnesses through consultation with flight surgeons in the Mission Control Center in Houston.