A patient presents with Lupus pernio, a classic skin sign of sarcoidosis. Explore the most specific laboratory test used to support the diagnosis.
Serum levels of which one of the following laboratory tests would be expected to be most abnormal in this patient?
What is the most likely diagnosis?
Angiotensin-converting enzyme, Dermatology, Lupus pernio, Noncaseating Granuloma, Sarcoidosis
