How is dx of sarcoidosis done?

▪ History ▪ Physical examination ▪ Posteroanterior chest radiograph ▪ Electrocardiography ▪ Pulmonary function tests ▪ Peripheral blood counts, ESR , Serum chemistries, including creatinine, calcium, and liver enzymes ▪ Routine ophthalmologic examination ▪ Tuberculin skin test ▪ Urine analysis, 24 hour urinary calcium ▪ Diagnostic procedures ▪ Tissue biopsy