Apex (altitude physiology expeditions) is a high altitude medical research charity. It is based in Edinburgh, Scotland and was founded in 2000. It has conducted two high altitude research expeditions to the Chacaltaya high altitude laboratory, in Bolivia.

Apex administers the International HAPE database, a research registry for individuals who are susceptible to high altitude pulmonary edema (HAPE) or high altitude cerebral edema (HACE).

External links

• The charity's official website
• Mountain sickness research
• High altitude pulmonary edema research