Sickle Trait info for ED physicians?

I'm an ED physician in Nevada. At my place of practice we have a ton of "sickle crisis" patients who seem to get admitted almost weekly for tons of IV narcotics and a vacation from life. While I'd like to help out the true homozygous sickle disease patients, I want to weed out the sickle trait people who are likely abusing the system.

I've started sending Protein S electrophoresis on these patients, in the hope that there will be evidence as to whether or not they are truly sickle...

Sickle Trait info for ED physicians?