He was well known for the successful surgical operation on Carlo Filangieri's leg, saving him from a gangrene which would have brought certain amputation. His surgical clinic became the most important in Naples, it was attended by many students and in 1876 he became a professor of surgery at Naples University.
Testa was also a member of the "Medical-Surgical Royal Academy".
- M. Fumarola, La Chiesa del Carmine di Martina Franca, 1981, Fasano di Brindisi, pp. 74–94
- Marinò Angelo, Repertorio bio-bibliografico degli scrittori, artisti e scienziati martinesi, 1970, Martina Franca, pp. 84–88
- Rapolla Testa Armando, Cenni sulla vita ed opere di Giuseppe testa, 1819–1894, 1967, Martina Franca, pp. 3–5
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