A New Method to Simultaneously Quantify the Antioxidants: Carotenes, Xanthophylls, and Vitamin A in Human Plasma

Table 4

Limit of detection (LoD), limit of quantification (LoQ), range of concentration, calibration curve, and correlation coefficient of the analytes in blank plasma spiked with standard solution.

Analytes	LoD (µg/mL)	LoQ (µg/mL)	Linearity range (µg/mL)	Calibration curve	Correlation coefficient ()
Retinol	0.2	0.7	0.7–10		0.9952
Astaxanthin	0.1	0.3	0.3–10		0.9964
Lutein	0.4	1.3	1.3–10		0.9954
Zeaxanthin	0.2	0.7	0.7–10		0.9955
Apo-8′-carotenal	0.2	0.7	0.7–10		0.9957
Cryptoxanthin	0.2	0.7	0.7–10		0.9952
15-Z--carotene	1.3	4.3	4.3–10		0.9984
13-Z--carotene	0.4	1.3	1.3–10		0.9969
-carotene	0.5	1.6	1.6–10		0.9966
-carotene	0.2	0.7	0.7–10		0.9983
9-Z--carotene	0.2	0.7	0.7–10		0.9959
E-lycopene	0.1	0.3	0.3–10		0.9952