Cushing's Diagnostic Charts (LDDST, ACTH Stim, UCCR)Canine Cushing's AllianceJul 41 min readUpdated: Jul 5Below are links to charts and information that may help you understand the results of diagnostic and screening tests for Cushing's disease. Low Dose Dexamethasone Suppression Test (LDDST) FlowchartACTH Stimulation Test Flowchart for DiagnosisUrine Cortisol Creatinine Ratio Test Interpretation