In Vivo (IV) NAA:

It has been suggested that NAA can be used to determine whole body elemental levels in living organisms. Ever since IVNAA has become an established technique in nuclear medicine, it is being widely used for biomedical analysis. IVNAA has found applications in basic physiological studies, clinical diagnosis of disease and monitoring of therapeutic interventions for diseases. Actually future developments in NAA depend on the diagnostic medical applications using in vivo activation.

¹H (n, γ)^2-H^{-                                        -}(Eγ = 2.22 MeV)

³¹P (n, γ)³²P                                        (Eγ = 0.08 MeV)