Saw new CFS doc today for test results. Told him at last appt sleep specialist (neurologist) was suspicious of mitochondrial disease. CFS doc did some labs that are markers for mitochondrial disease. Said I should have muscle biopsy but he's not an expert in metabolic disorders. So will have to see another specialist. Elevated ammonia and lactate amidosis. I've seen mito discussed on board but can search doesn't show anything up.