You may need a blood gas (ABG) test to measure the amount of oxygen and carbon dioxide in the blood. It may also be used to determine the pH of the blood, or how acidic it is. A blood gas test ...

A cortisol level test uses a blood sample to measure the level of cortisol in your blood. Cortisol is a steroid hormone released by the adrenal glands. The adrenal glands sit on top of your kidneys. A ...

A drug testing procedure can help employers to maintain a safe workplace. John Wilson of Concateno, a drug and alcohol testing company, outlines the areas to consider when implementing such a policy.