High Performance Liquid Chromatography (HPLC)

This technique allows us to measure:

Amino Acids
Three separate methods measure all the ‘bound’ amino acids, including
tryptophan, cysteine and methionine.
His, Ser, Arg, Gly, Asp, Glu, Thr, Ala, Pro, Lys, Tyr, Val, IIe, Leu, Phe, Cys, Met, Trp

Fat-soluble vitamins
α-carotene, β-carotene, lycopene, β-cryptoxanthin, xanthophyll, retinol,
δ-tocopherol, γ-tocopherol, α-tocopherol

Vitamin C/Organic acids