This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Having a low percentage of potassium in one's blood.

"He tells me that he once saw a documentary about a boy with a genetic condition called hypokalemic periodic paralysis and used Google to find a connection with that illness and hyperthyroidism."

hyperkalemic    normokalemic   

hypokalemia