How do I beat an drug test for diabetes for an job?

A potential employer is requiring you be tested for diabetes? Diabetes screening is somewhat more complex than peeing in a cup. We need more information in order to tackle this one!

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A drug test for DM? or do you mean a blood test? Don't eat is the simple answer. If you don't eat for a couple of days then the blood sugar will be down and it won't show in a simple test. Of course that isn't healthy.

Are companies allowed to test you before you go to work for diseases? What state are you in? That would just fly in the nose of the ADA wouldn't it?
The test for diabetes is not a drug test, but a test of the level of sugar in your blood or urine.

The only preparation for a diabetic for the blood level of sugar is to maintain medication levels and diet that control the glucose levels within normal range.

A drug screen for employment is testing for illegal drug use. To screen negative, do not use illegal drugs.

If you have taken illegal drugs in the past, to pass the test you must stop taking the drug (s) and allow time for their complete metabolism and excretion from your body for the test to be normal.
If you are diabetic there is nothing that will show up on a drug test. Also, companies can not legally refuse to hire someone because of a medical condition unless it would affect their job performance and diabetes will not affect your job performance.
Will they not hire you if you have diabetes? Because that is discrimination.