Skip to main content
. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Clin Nutr. 2018 Jun 4;38(3):1348–1354. doi: 10.1016/j.clnu.2018.05.027

Table 2.

Phenylalanine measures, kinetics, and FSR.

Parameter Mean (SD)
Phe Concentration/Enrichment
   Arterial Concentration (nmol·ml−1) 111 (34)
   Venous Concentration (nmol·ml−1) 112 (35)
   Arterial Enrichment (%) 4.44 (1.5)
   Venous Enrichment (%) 4.02 (1.7)
Phe Kinetics
   NB (nmol·min−1·100 ml−1·leg) −8 (73)
   Rd (nmol·min−1·100 ml−1·leg) 127 (87)
   Ra (nmol·min−1·100 ml−1·leg) 134 (76)
FSR (%·h−1) 0.16 (0.13)
Leg Blood Flow (ml·min−1·100 ml−1·leg) 13 (7)

For NB, n = 107 (obs = 160). For Rd, and Ra, n = 100 (obs = 152). For FSR, n = 235 (obs = 431). FSR, fractional synthetic rate; NB, net balance; Ra, rate of disappearance; Rd, rate of disappearance