Which method can be used to mix cloudy insulin?

The method of rolling or inverting the vial is the correct approach for mixing cloudy insulin. This technique is essential because cloudy insulins contain suspended particles or crystals that need to be evenly distributed before administration. By gently rolling or inverting the vial, the insulin can be mixed adequately without damaging the insulin molecules or compromising its potency. This gentle action ensures that the insulin becomes uniformly mixed, which is crucial for delivering the appropriate dose to the patient.

Other methods, such as forceful agitation, can cause bubbles to form and may also negatively impact the integrity of the insulin. Heating the insulin is not advisable since elevated temperatures can degrade the product, altering its effectiveness and safety. Pumping the insulin before injection does not effectively mix the solution and may lead to inconsistencies in dosing. Therefore, rolling or inverting the vial is the safest and most effective method for mixing cloudy insulin.