It's usually apparent to doctors if you have heatstroke, but laboratory tests can confirm their diagnosis, rule out other causes for your symptoms and assess organ damage. These tests include:
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- A blood test to check blood sodium or potassium and the content of gases in your blood to see if there's been damage to your central nervous system
- A urine test to check the color of your urine, because it's usually darker if you have a heat-related condition, and to check your kidney function, which can be affected by heatstroke
- Muscle function tests to check for serious damage to your muscle tissue (rhabdomyolysis)
- X-rays and other imaging tests to check for damage to your internal organs
- Extreme heat: A prevention guide to promote your personal health and safety. Centers for Disease Control and Prevention. http://www.bt.cdc.gov/disasters/extremeheat/heat_guide.asp. Accessed May 22, 2014.
- Heatstroke. The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/injuries_poisoning/heat_illness/heatstroke.html?qt=heatstroke&alt=sh. Accessed May 22, 2014.
- Hyperthermia: Too hot for your health. National Institute on Aging. http://www.nia.nih.gov/newsroom/2012/06/hyperthermia-too-hot-your-health. Accessed May 22, 2014.
- O'Connor FG, et al. Exertional heat illness in adolescents and adults: Epidemiology, thermoregulation, risk factors and diagnosis. http://www.uptodate.com/home. Accessed May 22, 2014.
- O'Connor FG, et al. Exertional heat illness in adolescents and adults: Management and prevention. http://www.uptodate.com/home. Accessed May 22, 2014.
- Mecham CC. Severe nonexertional hyperthermia (classic heat stroke) in adults. http://www.uptodate.com/home. Accessed May 22, 2014.