A CK-MB test may be used as a follow-up test to an elevated CK in order to determine whether the increase is due to heart damage or skeletal muscle damage.
Scuba organizations say recreational divers shouldn't go below about 130 feet, but one Egyptian diver recently ventured a bit deeper -- going more than 1,000 feet below the ocean surface and setting a world record in the process.
Class 5 â Waterproof and submersible to depths greater than 12 feet (often as much as 100 feet â varies by manufacturer). Suitable for any underwater sport of less depth than the manufacturerâs maximum depth rating. Common applications include scuba diving, snorkeling, search & rescue, and white water rafting.