A 60 year old man was referred to the ED by his primary care physician because of a platelet count of 6.
He had been generally well and had a past history of appendectomy (age 30), hypertension, and diet controlled type 2 diabetes. He had gone to his PCP 2 days ago because of a 'rash' on his legs, and bloodwork done at that time showed a hemoglobin of 136, WBC 6.2, and plts 6. The PCP called him this morning and told him to go to ED. He has not developed any new symptoms.
You are the internist consulted. What is your approach?