Considering the fact that your husband has most of the risk factors for diabetes, he appears to have developed diabetes. Now if he has any syptoms , such as thirst , passing urine excessively and being more hungry than usual , one test is enough for the diagnosis. If he does not have any symptoms, my suggestion is that he should have another fasting and PLBS test and also would recommend him to have further tests incuding HBA1c, Lipid profile, Liver function tests , CBP and kidney profile, etc Hope this helps