Research Article

Determination of Retinol, -Tocopherol, Lycopene, and -Carotene in Human Plasma Using HPLC with UV-Vis Detection: Application to a Clinical Study

Table 1

Precision of retinol, -tocopherol, lycopene, and -carotene in human plasma.

Retinol
mean ± S.D.,
mol/L
CV, %α-Tocopherol
mean ± S.D.,
mol/L
CV, %Lycopene
mean ± S.D.,
mol/L
CV, %β-Carotene
mean ± S.D.,
mol/L
CV, %

(A) Precision (within day)
 101.27 ± 0.075.522.1 ± 0.693.10.069 ± 0.0057.20.270 ± 0.0186.7
 103.02 ± 0.155.028.2 ± 0.732.60.097 ± 0.0066.20.615 ± 0.0294.7
(B) Precision (between day)
 103.05 ± 0.216.928.8 ± 1.214.20.099 ± 0.0099.10.611 ± 0.0487.9