Is Regular Insulin Cloudy?

If regular insulin becomes cloudy, throw it away, says the ADA. It has lost its effectiveness, and won't keep your blood sugar from getting too high. If your insulin is a mix of regular and NPH or ultralente insulins, you may be getting NPH or ultralente in the bottle of regular insulin. This, too, will make it cloudy.

Which insulin is first cloudy or clear?

If clear and cloudy insulin are used, inject air into the cloudy insulin first, followed by the clear insulin. Leave the needle inside the clear insulin bottle. Hold the bottle with one hand and turn it upside down, keeping the needle inside the bottle.

Should regular insulin be clear?

Always, draw “clear before cloudy” insulin into the syringe. This is to prevent cloudy insulin from entering the clear insulin bottle.