Hello good

I wanted to ask you what your experience is with the appearance of insulin.

Obviously a manufacturer told me that if it is "cloudy" I discard it and on the part of the manufacturing lot.But how much is cloudy .. milky?And ... how much is cloudy for each brand?

Usually Novorapid, Levemir, Lantus, Fiasp, .. to the traffic is transparent but I have lately seen suspension particles.Sometimes they look as a form of nodules, others such as threads, etc.What can this be due?Is it harmful?The vials are always carrying this since I have started to fix, and the age of insulin is not to differ much.

Thank you so much.