Average fractional DNL in TRL, VLDLU, and CMU. Average fractional DNL measured in eight healthy adults over an 8 h stable-isotope tracer study. Average DNL AUC × 5 h (study time 3–8 h): TRL, 53.9 ± 6.8; VLDLU, 73.2 ± 11.5; CMU, 46.6 ± 6.6 (average ± SEM). DNL AUC p-value, n = 8: TRL versus VLDLU, P = 0.0120; TRL versus CMU, P = 0.0009; VLDLU versus CMU, P = 0.0051. VLDLU/VLDL(U), VLDL obtained by ultracentrifugation; CMU or CM(U), CMs obtained by ultracentrifugation.