FDA drug class
Skin Test Antigens list
Every FDA-approved prescription drug the FDA NDC directory tags with the Skin Test Antigen [EPC] class, with brand names and DEA schedules.
Source: FDA NDC Directory file dated 2026-10-22. Publisher page
The FDA NDC directory lists 2 single-ingredient drugs in this class: coccidioides immitis spherule, tuberculin purified protein derivative.
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Skin Test Antigens (2)
| Drug | Brand names | Type | NDC listings | DEA schedule |
|---|---|---|---|---|
| Coccidioides immitis spherule | Spherusol | Single ingredient | 1 | Not controlled |
| Tuberculin purified protein derivative | Tubersol, Aplisol | Single ingredient | 4 | Not controlled |
FDA established pharmacologic class: Skin Test Antigen [EPC].
Questions
What drugs are Skin Test Antigens?
The FDA NDC directory lists 2 single-ingredient drugs in this class: coccidioides immitis spherule, tuberculin purified protein derivative.
Where does this list come from?
From the established pharmacologic class (EPC) field FDA publishes for each listing in the NDC directory. A drug is listed when most of its prescription listings carry the class.