A Certified Spiking Solution(R) of routinely tested Butyryl-L-Carnitine, Isobutyryl-L-Carnitine, Valeryl-L-Carnitine, Isovaleryl-L-Carnitine, Hexanoyl-L-Carnitine, Octanoyl-L-Carnitine, Decanoyl-L-Carnitine, Lauroyl-L-Carnitine, Myristoyl-L-Carnitine and Stearoyl-L-Carnitine at concentrations of...