From your article.
“ Serum heat inactivation at 56°C for 30 minutes is a standard procedure in diagnostic laboratories to eliminate the potential complement interference in serological assays. Our results showed that this procedure is sufficient for viral inactivation as virus titres in blood are expected to be weaker than at the point of infection.”
56 C = 132 F
My car in Phoenix in July
I understand, however at 65C for 15 minutes the virus completely inactivates and is not detectable. I saw the 56C in other papers and am more comfortable with higher.