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. 2021 Jul 8;8:682134. doi: 10.3389/fmolb.2021.682134

TABLE 1.

Blood metabolites measured using 1H NMR spectroscopy. Metabolites are listed in alphabetical order.

ACD Citrate EDTA Fluoride Heparin Serum HMDB reference values b
(N = 8) (N = 8) (N = 8) (N = 8) (N = 8) (N = 8) (uM)
2-Aminobutyrate
Mean (SD) 22.4 (6.4) 22.7 (6.9) 24.0 (7.9) 24.8 (8.0) 24.3 (8.8) 24.4 (8.1) 23.0 (15.0–31.0)
Cynober (2002)
Median (range) 23.7 (13.3–30.7) 23.4 (13.4–31.1) 25.7 (13.0–34.6) 25.5 (12.5–34.8) 25.2 (11.7–34.9) 25.3 (13.0–35.3)
%CV (SD) a 4.3 (2.9) 5.4 (3.9) 7.4 (4.4) 5.4 (3.3) 7.2 (5.7) 6.8 (4.45)
2-Hydroxybutyrate
Mean (SD) 20.8 (6.8) 25.5 (8.8) 29.2 (10.4) 31.4 (10.3) 30.1 (8.7) 31.8 (10.1) 31.3 (7.8)
Zordoky et al. (2015)
Median (range) 18.6 (15.6–35.9) 21.8 (18.3–45.3) 25.2 (21.5–52.7) 28.3 (22.0–55.0) 28.3 (21.5–48.5) 28.7 (23.6–54.8)
%CV (SD) a 3.3 (2.5) 3.2 (1.7) 5.9 (3.3) 3.2 (0.8) 7.2 (6.5) 3.5 (3.0)
2-Hydroxyisovalerate
Mean (SD) 4.4 (1.7) 5.5 (2.1) 6.1 (2.7) 6.2 (2.9) 6.1 (2.9) 6.5 (3.1) 7.7 (0.0–19.0)
Lentner (1981-1992)
Median (range) 3.7 (3.1–8.2) 4.8 (3.2–9.8) 4.9 (3.4–11.6) 5.2 (3.2–12.1) 5.0 (3.4–12.1) 5.5 (3.2–12.6)
%CV (SD) a 6.9 (6.4) 10.8 (5.5) 7.3 (3.4) 7.4 (3.8) 8.4 (4.1) 4.9 (3.3)
2-Oxoglutarate
Mean (SD) 6.7 (1.5) 7.89 (1.9) 9.8 (2.3) 6.4 (2.7) 8.4 (2.1) 9.1 (2.4) 8.9 (2.7)
Lentner (1981-1992)
Median (range) 6.7 (4.9–8.7) 7.3 (5.6–11.4) 9.2 (7.6–13.8) 5.9 (2.6–11.2) 7.8 (6.4–12.6) 9.1 (6.2–13.2)
%CV (SD) a 7.1 (6.1) 9.9 (5.8) 7.0 (4.3) 10.5 (5.9) 7.6 (2.5) 9.2 (5.3)
2-Oxoisocaproate
Mean (SD) 3.7 (0.8) 4.6 (1.2) 4.8 (1.3) 5.2 (1.5) 5.2 (1.5) 5.4 (1.5) 28.0 (0.0–58.0)
Hoffmann et al. (1993)
Median (range) 3.6 (2.7–5.3) 4.5 (3.2–6.9) 4.5 (3.7–7.6) 4.8 (3.7–8.3) 4.9 (3.7–8.2) 5.1 (3.8–8.2)
%CV (SD) a 9.7 (5.6) 4.7 (1.5) 9.2 (6.5) 7.1 (4.8) 8.3 (3.8) 6.7 (4.6)
3-Hydroxybutyrate
Mean (SD) 58.1 (71.1) 60.0 (69.9) 83.1 (108.1) 83.1 (108.1) 71.7 (74.9) 74.1 (84.4) 76.9 (66.3)
Psychogios et al. (2011)
Median (range) 31.1 (20.4–230.7) 30.8 (22.3–228.3) 37.8 (30.9–345.4) 39.6 (30.9–346.2) 38.5 (30.4–247.7) 38.1 (31.4–277.2)
%CV (SD) a 4.7 (3.8) 2.9 (1.8) 5.4 (3.5) 2.9 (0.9) 7.9 (7.7) 4.4 (2.5)
3-Hydroxyisobutyrate
Mean (SD) 12.6 (2.1) 14.1 (2.2) 15.9 (2.3) 15.0 (2.0) 15.9 (2.4) 16.4 (2.3) 21.0 (2.0)
Avogaro and Bier (1989)
Median (range) 11.8 (10.8–16.2) 13.3 (11.9–18.8) 15.5 (13.0–19.8) 15.2 (11.2–18.0) 15.5 (12.1–20.3) 16.0 (13.6–21.2)
%CV (SD) a 5.3 (3.4) 3.0 (3.1) 5.4 (2.8) 4.6 (1.4) 7.1 (5.3) 3.9 (2.6)
3-Methyl-2-oxobutanoate
Mean (SD) 10.9 (2.1) 13.5 (3.1) 14.7 (3.5) 15.3 (4.0) 15.5 (4.3) 15.9 (3.7) 11.0 (1.7)
Lentner (1981-1992)
Median (range) 10.7 (7.8–15.7) 13.6 (9.3–20.0) 14.4 (10.2–22.6) 15.0 (10.7–24.1) 14.5 (11.2–25.5) 15.3 (11.0–23.9)
%CV (SD) a 4.2 (3.5) 2.4 (1.8) 5.0 (3.3) 4.4 (1.7) 6.2 (7.2) 4.0 (3.0)
Acetate
Mean (SD) 39.1 (8.7) 56.9 (12.6) 60.6 (14.6) 51.7 (14.3) 43.2 (13.1) 38.1 (9.1) 41.9 (15.1)
Psychogios et al. (2011)
Median (range) 40.1 (25.3–51.0) 59.5 (38.6–74.6) 63.1 (41.5–81.6) 50.3 (36.7–78.2) 43.3 (27.5–62.7) 40.4 (25.5–50.3)
%CV (SD) a 4.6 (3.7) 4.5 (3.2) 6.1 (4.3) 2.8 (1.4) 9.2 (6.9) 6.4 (1.9)
Acetoacetate
Mean (SD) 26.9 (23.9) 57.3 (20.4) 37.4 (37.1) 37.9 (38.1) 31.5 (20.9) 29.2 (21.0) 40.6 (36.5)
Psychogios et al. (2011)
Median (range) 18.6 (9.3–84.4) 51.2 (41.3–105.3) 25.8 (14.0–127.1) 24.9 (15.0–130.3) 25.0 (13.5–78.3) 22.6 (13.2–78.3)
%CV (SD) a 4.4 (4.7) 2.4 (2.1) 4.8 (2.8) 3.5 (2.6) 8.1 (7.0) 4.9 (2.5)
Acetone
Mean (SD) 33.8 (12.1) 115.0 (20.0) 20.6 (16.6) 18.6 (15.4) 19.2 (15.0) 20.49 (15.9) 54.4 (29.6)
Psychogios et al. (2011)
Median (range) 29.7 (24.4–59.7) 121.7 (83.6–137.0) 14.0 (9.1–57.4) 13.7 (7.4–52.8) 15.0 (7.6–51.7) 15.0 (8.0–54.1)
%CV (SD) a 7.6 (4.0) 4.9 (3.3) 8.8 (4.4) 8.8 (5.3) 9.7 (6.6) 8.2 (3.7)
Alanine
Mean (SD) 274.7 (44.7) 287.1 (51.7) 331.1 (63.3) 291.3 (52.6) 331.1 (65.8) 370.9 (60.5) 427.2 (84.4)
Psychogios et al. (2011)
Median (range) 271.5 (195.0–339.6) 278.5 (207.5–356.4) 324.7 (232.6–431.1) 284.5 (204.7–372.1) 327.6 (218.0–421.5) 369.4 (272.1–460.4)
%CV (SD) a 3.1 (3.5) 2.1 (0.8) 4.9 (2.8) 2.5 (1.5) 6.1 (5.7) 3.4 (2.0)
Arginine
Mean (SD) 59.9 (8.6) 60.4 (9.6) 64.2 (7.2) 64.3 (11.0) 64.9 (12.3) 78.1 (9.2) 113.6 (14.6)
Psychogios et al. (2011)
Median (range) 61.7 (44.4–73.8) 62.4 (41.6–75.0) 61.1 (54.1–72.7) 62.8 (47.8–78.0) 67.1 (39.7–78.1) 80.4 (61.9–89.9)
%CV (SD) a 8.5 (6.7) 10.7 (5.9) 12.1 (5.1) 12.7 (8.3) 11.2 (4.3) 6.5 (3.3)
Asparagine
Mean (SD) 38.7 (6.2) 42.1 (6.2) 48.9 (7.5) 42.3 (7.6) 48.7 (7.8) 52.8 (8.7) 41.0 (10.0)
Psychogios et al. (2011)
Median (range) 41.9 (28.3–45.0) 40.2 (35.2–50.6) 49.5 (40.0–58.9) 45.0 (29.8–52.6) 50.5 (34.3–57.8) 54.9 (40.6–63.6)
%CV (SD) a 7.3 (3.2) 8.7 (3.6) 11.4 (3.5) 7.6 (4.6) 6.2 (5.7) 5.5 (2.8)
Betaine
Mean (SD) 35.4 (11.3) 33.0 (11.5) 40.3 (14.6) 33.3 (12.1) 40.1 (14.9) 41.9 (14.8) 72.0 (22.4)
Psychogios et al. (2011)
Median (range) 35.9 (13.2–51.6) 33.5 (11.2–50.4) 40.9 (15.4–65.1) 33.2 (12.1–53.9) 38.5 (15.4–66.6) 42.1 (15.2–67.1)
%CV (SD) a 5.8 (3.4) 4.5 (3.6) 10.4 (5.3) 4.7 (1.8) 6.3 (5.6) 3.6 (3.2)
Butyrate
Mean (SD) 3.1 (0.6) 3.6 (0.7) 4.1 (0.7) 5.0 (1.2) 4.2 (1.1) 4.5 (0.9) 1.0 (0.3–1.5)
Lentner (1981-1992)
Median (range) 2.9 (2.5–4.0) 3.7 (2.6–4.7) 4.0 (3.2–5.4) 4.8 (3.4–6.8) 4.2 (3.1–6.7) 4.4 (3.5–5.9)
%CV (SD) a 12.3 (4.8) 6.7 (2.8) 10.1 (3.7) 8.7 (3.1) 11.2 (4.4) 8.3 (5.0)
Carnitine
Mean (SD) 33.6 (3.6) 28.1 (3.2) 34.6 (5.5) 29.6 (3.9) 33.4 (5.7) 34.3 (5.1) 45.7 (11.6)
Psychogios et al. (2011)
Median (range) 32.7 (30.4–41.6) 26.2 (25.4–33.6) 35.9 (27.8–41.9) 29.1 (24.0–37.2) 31.6 (26.8–45.4) 32.6 (29.7–45.7)
%CV (SD) a 4.1 (4.0) 3.2 (2.6) 11.1 (6.7) 3.6 (1.9) 7.8 (6.6) 5.7 (1.7)
Choline
Mean (SD) 6.6 (1.3) 6.2 (1.1) 9.6 (5.5) 7.6 (1.3) 7.3 (1.5) 8.1 (1.4) 14.5 (5.3)
Psychogios et al. (2011)
Median (range) 6.3 (5.2–9.3) 6.1 (4.8–8.6) 7.6 (6.0–23.0) 7.2 (5.9–10.3) 7.1 (5.6–10.3) 7.8 (6.7–11.4)
%CV (SD) a 6.0 (2.0) 7.9 (6.0) 15.3 (18.7) 4.0 (1.7) 9.5 (6.5) 4.1 (2.4)
Citrate
Mean (SD) 32,811.3 (2,920.0) 21,014.6 (1,592.1) 117.6 (30.2) 124.7 (34.9) 90.4 (27.2) 109.9 (32.4) 114.2 (27.0)
Psychogios et al. (2011)
Median (range) 32,460.3 (28,837.0–37,319.6) 20,813.0 (18,344.4–22,967.5) 111.1 (66.7–162.7) 118.1 (69.7–184.5) 83.8 (49.2–129.8) 102.9 (60.0–167.1)
%CV (SD) a 3.1 (3.3) 1.9 (1.8) 11.4 (4.6) 4.4 (1.9) 10.0 (6.3) 5.6 (4.0)
Creatine
Mean (SD) 27.7 (14.8) 27.1 (14.4) 34.5 (19.6) 30.3 (16.8) 33.1 (17.2) 34.9 (18.1) 36.7 (28.3)
Psychogios et al. (2011)
Median (range) 24.0 (11.6–52.7) 24.8 (11.4–51.5) 29.2 (13.7–69.1) 26.5 (12.1–59.7) 30.1 (12.5–64.1) 31.3 (14.4–65.1)
%CV (SD) a 5.1 (3.3) 3.6 (2.3) 6.1 (2.9) 4.8 (1.7) 7.0 (6.0) 4.3 (2.3)
Creatinine
Mean (SD) 51.9 (9.8) 55.1 (11.1) 63.1 (13.5) 58.8 (13.9) 63.3 (13.0) 65.8 (13.2) 86.6 (18.8)
Psychogios et al. (2011)
Median (range) 56.6 (36.3–64.6) 61.0 (41.0–66.9) 67.4 (44.1–82.6) 65.1 (38.7–75.6) 66.5 (47.6–82.1) 71.7 (46.5–82.3)
%CV (SD) a 3.2 (3.7) 2.5 (1.9) 5.9 (3.6) 3.6 (1.6) 7.4 (6.3) 3.5 (1.9)
Dimethyl sulfone
Mean (SD) 5.6 (1.6) 6.1 (1.9) 7.2 (1.6) 6.9 (1.9) 6.8 (1.8) 7.3 (2.2) 8.8 (7.3)
Engelke et al. (2005)
Median (range) 5.2 (4.0–8.0) 5.5 (4.2–9.2) 6.6 (5.8–9.7) 6.6 (4.7–9.9) 6.4 (4.7–9.8) 6.8 (4.8–10.4)
%CV (SD) a 4.7 (3.8) 4.2 (2.6) 7.1 (2.9) 5.8 (3.9) 8.1 (5.9) 6.6 (2.7)
Formate
Mean (SD) 135.3 (5.8) 36.9 (2.3) 183.6 (7.8) 13.5 (2.3) 13.4 (1.8) 12.2 (1.9) 32.8 (3.3)
Psychogios et al. (2011)
Median (range) 134.5 (125.9–143.9) 37.0 (33.4–40.3) 181.0 (174.4–198.9) 13.3 (10.9–18.7) 12.9 (11.4–17.1) 12.6 (9.9–15.1)
%CV (SD) a 3.3 (3.4) 4.6 (1.6) 4.8 (3.3) 10.4 (5.9) 7.9 (4.6) 6.9 (4.5)
Glucose
Mean (SD) 22,764.9 (1,021.3) 4,134.3 (323.0) 4,712.0 (484.5) 4,505.2 (415.1) 4,505.0 (326.2) 4,511.9 (319.6) 4,971.3 (327.8)
Psychogios et al. (2011)
Median (range) 22,686.5 (21,345.6–24,020.9) 4,039.6 (3,856.2–4,872.4) 4,653.4 (4,059.2–5,556.5) 4,357.5 (4,022.1–5,292.6) 4,434.0 (4,063.4–5,114.2) 4,525.9 (4,087.4–5,090.4)
%CV (SD) a 3.2 (3.7) 3.2 (1.8) 4.9 (3.0) 3.6 (2.0) 6.9 (6.7) 3.3 (3.2)
Glutamate
Mean (SD) 41.0 (11.7) 23.6 (6.8) 38.5 (14.7) 34.1 (13.1) 30.2 (9.5) 44.3 (7.7) 97.4 (13.2)
Psychogios et al. (2011)
Median (range) 41.2 (23.9–57.5) 21.1 (16.7–34.4) 36.6 (25.4–70.3) 32.1 (21.8–63.4) 34.0 (16.9–40.6) 45.4 (33.5–54.7)
%CV (SD) a 10.1 (5.6) 8.0 (2.6) 10.2 (5.6) 12.0 (10.2) 9.9 (8.9) 10.5 (5.1)
Glutamine
Mean (SD) 415.7 (53.6) 436.0 (50.4) 482.4 (54.4) 436.9 (53.6) 492.6 (69.9) 516.7 (63.7) 510.4 (118.2)
Psychogios et al. (2011)
Median (range) 435.7 (330.8–474.7) 445.4 (354.8–506.9) 486.1 (390.1–571.4) 445.8 (336.5–502.5) 504.2 (354.7–570.8) 528.3 (408.5–598.2)
%CV (SD) a 5.5 (3.1) 5.5 (2.6) 5.6 (3.8) 4.5 (2.9) 6.2 (5.2) 4.0 (2.4)
Glycine
Mean (SD) 184.7 (48.7) 193.1 (55.8) 243.3 (62.3) 201.4 (56.4) 225.3 (67.4) 251.7 (64.1) 325.4 (126.8)
Psychogios et al. (2011)
Median (range) 176.0 (137.6–291.6) 180.7 (136.3–317.2) 225.8 (189.6–387.8) 185.3 (148.5–329.1) 206.6 (174.8–375.5) 237.1 (192.8–396.1)
%CV (SD) a 3.4 (2.8) 2.2 (1.6) 4.6 (3.1) 2.2 (1.2) 6.2 (5.8) 3.3 (2.1)
Histidine
Mean (SD) 51.1 (5.8) 56.8 (5.5) 64.6 (8.8) 49.3 (9.2) 58.7 (9.5) 63.7 (9.6) 131.2 (37.2)
Psychogios et al. (2011)
Median (range) 54.2 (43.6–56.5) 57.2 (50.0–66.0) 62.7 (55.4–79.4) 47.2 (39.6–64.2) 61.0 (42.8–73.9) 62.5 (50.4–76.9)
%CV (SD) a 8.7 (3.6) 7.0 (4.5) 10.2 (3.2) 12.9 (8.5) 10.4 (5.4) 6.5 (3.6)
Isoleucine
Mean (SD) 51.1 (9.9) 54.8 (10.0) 60.5 (13.2) 60.4 (13.4) 60.1 (13.7) 63.7 (12.4) 60.7 (18.6)
Psychogios et al. (2011)
Median (range) 48.4 (41.0–66.5) 53.5 (44.9–71.4) 55.7 (47.8–82.1) 58.5 (47.4–81.5) 58.5 (43.9–80.4) 60.5 (51.9–85.2)
%CV (SD) a 4.4 (3.6) 2.3 (1.8) 5.1 (3.1) 3.0 (2.2) 6.7 (6.3) 3.7 (2.5)
Lactate
Mean (SD) 885.1 (322.7) 1,041.8 (419.5) 1,635.2 (583.1) 1,194.4 (549.3) 1,547.7 (610.3) 2,170.8 (520.0) 1,489.4 (371.2)
Psychogios et al. (2011)
Median (range) 830.8 (401.5–1,399.4) 972.2 (623.3–1972.7) 1,338.4 (997.2–2,505.5) 997.9 (440.9–2092.1) 1,293.5 (1,042.6–2,734.9) 2038.7 (1,528.1–3,219.3)
%CV (SD) a 4.4 (3.8) 5.0 (3.4) 5.9 (3.0) 3.1 (1.6) 7.5 (5.5) 3.1 (3.2)
Leucine
Mean (SD) 78.2 (15.6) 79.5 (14.8) 91.1 (20.4) 90.6 (22.1) 94.5 (22.4) 99.9 (20.3) 98.7 (11.5)
Psychogios et al. (2011)
Median (range) 73.2 (64.4–106.7) 78.5 (62.5–105.7) 86.1 (73.4–124.7) 86.7 (68.6–127.6) 94.5 (69.4–134.3) 95.6 (80.3–132.8)
%CV (SD) a 4.7 (3.9) 3.2 (1.6) 5.2 (3.3) 3.8 (2.7) 6.7 (6.0) 4.3 (2.0)
Lysine
Mean (SD) 107.9 (23.2) 113.1 (24.1) 132.1 (30.8) 115.4 (25.7) 127.5 (30.2) 137.2 (28.5) 178.6 (58.2)
Psychogios et al. (2011)
Median (range) 108.8 (74.7–140.0) 109.2 (76.7–145.8) 133.1 (82.0–169.4) 115.1 (75.9–145.3) 127.2 (79.4–159.5) 137.9 (91.6–172.8)
%CV (SD) a 4.8 (2.8) 4.9 (2.5) 6.4 (4.7) 4.3 (1.8) 5.6 (5.3) 4.7 (3.1)
Mannose
Mean (SD) 40.6 (6.2) 44.5 (7.9) 47.6 (6.0) 47.6 (8.9) 47.7 (7.1) 45.9 (7.0) 39.0 (7.0)
Lentner (1981-1992)
Median (range) 39.8 (31.0–51.6) 47.9 (30.6–52.3) 48.6 (36.3–55.0) 49.7 (34.6–60.5) 49.6 (35.7–56.7) 47.6 (34.8–54.6)
%CV (SD) a 8.5 (5.0) 10.0 (5.3) 7.6 (3.7) 6.9 (4.5) 8.5 (4.2) 7.9 (4.5)
Methanol
Mean (SD) 68.2 (15.0) 29.4 (15.8) 27.9 (17.8) 28.1 (16.8) 27.7 (15.1) 28.0 (18.5) 77.4 (16.3)
Psychogios et al. (2011)
Median (range) 65.9 (52.3–99.6) 28.0 (12.1–60.0) 26.1 (11.2–65.0) 26.9 (11.0–59.7) 27.8 (11.3–55.3) 26.6 (8.4–63.9)
%CV (SD) a 4.9 (4.9) 5.9 (5.1) 9.8 (4.8) 4.8 (1.8) 9.3 (5.9) 4.8 (3.7)
Methionine
Mean (SD) 18.0 (2.3) 20.7 (2.9) 24.0 (3.7) 23.9 (3.7) 24.3 (3.5) 25.6 (3.4) 29.8 (6.3)
Psychogios et al. (2011)
Median (range) 17.6 (16.3–23.5) 19.6 (18.0–27.2) 23.8 (18.7–31.1) 22.5 (20.2–31.8) 24.1 (20.2–31.9) 24.7 (22.7–33.5)
%CV (SD) a 6.1 (4.2) 9.8 (4.8) 9.2 (5.3) 5.0 (3.2) 6.5 (4.8) 7.3 (4.8)
Myo inositol
Mean (SD) 18.3 (2.1) 18.3 (1.8) 22.9 (2.1) 18.8 (2.6) 23.9 (2.0) 25.6 (3.0) 23.0 (8.0)
Psychogios et al. (2011)
Median (range) 18.5 (15.2–21.3) 18.8 (15.6–20.8) 21.9 (20.8–26.0) 19.2 (15.0–22.9) 23.9 (20.6–26.3) 26.6 (21.0–29.0)
%CV (SD) a 4.6 (4.8) 9.6 (4.9) 12.0 (2.8) 14.1 (9.6) 11.9 (4.9) 11.2 (5.2)
N,N-Dimethylglycine
Mean (SD) 1.8 (0.5) 1.9 (0.6) 2.2 (0.7) 2.1 (0.5) 2.2 (0.7) 2.3 (0.7) 2.6 (1.8–3.7)
Mcgregor et al. (2001)
Median (range) 1.7 (1.3–2.8) 1.8 (1.2–2.8) 2.1 (1.3–3.5) 2.0 (1.4–3.1) 2.1 (1.6–3.6) 2.2 (1.6–3.6)
%CV (SD) a 5.8 (4.4) 10.3 (4.4) 9.6 (7.3) 7.9 (4.8) 7.2 (3.8) 8.1 (4.4)
O-Acetylcarnitine
Mean (SD) 5.8 (1.3) 6.1 (1.5) 7.9 (2.1) 7.3 (1.3) 7.9 (1.3) 8.1 (1.5) 5.48 (2.15)
Psychogios et al. (2011)
Median (range) 5.8 (4.2–8.1) 5.8 (4.3–8.2) 7.4 (6.0–11.3) 7.0 (5.8–9.5) 7.9 (5.3–9.6) 8.0 (6.4–10.3)
%CV (SD) a 6.2 (3.6) 10.7 (6.1) 10.2 (5.6) 10.6 (5.6) 9.5 (4.8) 13.1 (5.9)
Ornithine
Mean (SD) 35.1 (8.2) 38.6 (9.2) 50.2 (12.5) 47.2 (11.4) 49.3 (14.3) 63.0 (15.3) 66.9 (15.3)
Psychogios et al. (2011)
Median (range) 32.3 (22.5–48.3) 38.8 (23.9–52.6) 50.4 (30.5–71.9) 45.7 (30.9–64.5) 50.1 (27.0–73.1) 61.9 (39.1–93.9)
%CV (SD) a 6.9 (3.7) 4.3 (2.6) 7.4 (3.6) 9.4 (5.9) 6.5 (5.5) 3.9 (2.4)
Phenylalanine
Mean (SD) 41.2 (6.1) 43.1 (5.7) 46.5 (7.1) 45.4 (7.7) 45.6 (7.7) 53.3 (6.8) 78.1 (20.5)
Psychogios et al. (2011)
Median (range) 39.0 (36.6–54.4) 40.8 (38.4–54.8) 43.6 (41.2–61.9) 43.8 (37.7–61.4) 44.6 (37.4–63.5) 51.0 (48.1–68.6)
%CV (SD) a 4.9 (3.1) 2.6 (1.2) 5.5 (3.1) 3.2 (2.2) 6.8 (7.3) 4.0 (1.3)
Proline
Mean (SD) 127.8 (32.9) 135.5 (30.1) 158.1 (42.6) 146.3 (40.4) 156.4 (42.6) 169.4 (44.4) 198.3 (64.8)
Psychogios et al. (2011)
Median (range) 125.2 (75.4–175.3) 133.5 (81.4–174.9) 153.6 (93.1–231.4) 136.0 (85.7–213.8) 146.7 (88.6–221.7) 164.9 (97.4–235.4)
%CV (SD) a 5.7 (3.3) 5.0 (4.3) 7.8 (3.7) 7.4 (4.4) 6.6 (5.5) 4.2 (2.4)
Pyruvate
Mean (SD) 89.6 (19.7) 80.7 (22.6) 110.4 (28.5) 6.0 (1.6) 76.8 (30.6) 72.2 (28.3) 64.0 (22–258)
Psychogios et al. (2011)
Median (range) 93.2 (60.0–118.9) 75.0 (57.4–125.5) 109.5 (79.9–166.0) 5.4 (4.6–9.7) 73.2 (39.0–141.7) 69.0 (43.7–123.0)
%CV (SD) a 3.9 (3.7) 4.7 (3.1) 5.5 (3.6) 5.9 (1.5) 7.0 (5.1) 3.1 (2.2)
Serine
Mean (SD) 96.9 (19.7) 95.8 (20.4) 113.5 (24.2) 101.0 (23.6) 112.6 (27.1) 133.1 (27.2) 159.8 (26.6)
Psychogios et al. (2011)
Median (range) 95.8 (70.5–123.7) 90.6 (69.7–129.0) 105.8 (86.8–153.8) 94.7 (67.8–133.0) 101.2 (81.7–157.4) 126.0 (94.3–174.1)
%CV (SD) a 5.2 (2.7) 5.4 (3.1) 6.7 (4.3) 5.4 (1.7) 5.8 (4.6) 3.3 (2.2)
Succinate
Mean (SD) 9.0 (1.4) 6.4 (2.5) 6.0 (2.1) 5.1 (1.9) 5.6 (2.2) 6.4 (2.7) 16.0 (0.0–32.0)
Psychogios et al. (2011)
Median (range) 8.6 (7.5–12.2) 5.8 (3.8–10.8) 5.4 (3.7–10.0) 4.6 (3.3–9.3) 4.9 (3.3–10.0) 5.4 (4.0–11.5)
%CV (SD) a 4.4 (4.2) 9.0 (5.5) 10.2 (5.0) 7.2 (6.4) 9.8 (5.4) 8.1 (4.4)
Taurine
Mean (SD) 133.3 (18.6) 55.4 (11.6) 59.0 (11.0) 65.9 (13.3) 67.2 (9.3) 146.5 (10.0) 141.0 (57.0)
Lentner (1981-1992)
Median (range) 132.2 (108.2–170.5) 56.7 (37.9–71.8) 61.7 (40.7–70.0) 65.0 (43.6–83.2) 68.9 (51.5–77.2) 145.5 (134.6–167.5)
%CV (SD) a 5.8 (2.6) 12.1 (7.5) 12.7 (4.9) 9.0 (7.5) 8.1 (6.0) 6.3 (4.6)
Threonine
Mean (SD) 93.6 (18.1) 97.9 (17.2) 114.2 (23.1) 104.9 (20.5) 111.4 (24.7) 118.3 (23.5) 127.7 (41.0)
Psychogios et al. (2011)
Median (range) 100.1 (56.7–114.4) 96.4 (63.2–118.3) 115.6 (69.5–142.0) 107.9 (59.9–127.6) 116.5 (63.2–139.7) 123.7 (68.6–144.7)
%CV (SD) a 8.2 (5.2) 6.6 (5.0) 7.6 (2.9) 5.8 (2.6) 7.0 (4.1) 5.6 (3.9)
Tryptophan
Mean (SD) 5.9 (1.2) 4.0 (1.3) 4.7 (0.8) 4.2 (1.1) 4.6 (1.0) 5.4 (1.0) 54.5 (9.7)
Psychogios et al. (2011)
Median (range) 6.0 (4.6–7.7) 3.9 (1.9–6.2) 4.9 (3.0–5.7) 4.1 (2.8–5.5) 4.6 (2.9–6.2) 5.4 (3.9–7.3)
%CV (SD) a 8.0 (5.1) 10.2 (9.1) 6.1 (4.0) 12.4 (17.1) 11.8 (5.3) 10.8 (5.2)
Tyrosine
Mean (SD) 51.8 (7.9) 54.1 (7.7) 60.1 (10.2) 58.3 (9.7) 59.2 (11.1) 63.5 (9.4) 54.5 (9.7)
Psychogios et al. (2011)
Median (range) 50.8 (39.8–67.2) 54.1 (42.3–68.3) 58.4 (45.4–79.2) 57.1 (45.0–77.3) 58.6 (41.5–79.7) 61.4 (49.6–81.9)
%CV (SD) a 4.1 (4.7) 2.2 (1.8) 6.1 (2.2) 3.6 (1.7) 5.6 (6.0) 2.9 (1.5)
Urea
Mean (SD) 1,663.5 (507.7) 1929.5 (466.1) 2,510.7 (688.1) 2,613.6 (788.1) 2,715.3 (790.9) 3,038.1 (722.4) 6,074.6 (2,154.2)
Psychogios et al. (2011)
Median (range) 1,487.2 (1,097.2–2,572.7) 1715.9 (1,429.3–2,700.2) 2,225.3 (1809.4–3,458.5) 2,422.8 (1778.4–3,861.3) 2,525.5 (1904.4–3,731.2) 2,772.3 (2,317.5–3,971.9)
%CV (SD) a 5.9 (3.0) 6.5 (4.4) 7.0 (4.0) 13.2 (6.8) 6.9 (3.3) 12.5 (13.1)
Valine
Mean (SD) 185.3 (27.6) 198.1 (30.1) 223.9 (39.0) 220.1 (39.3) 221.3 (42.6) 236.7 (36.6) 212.3 (61.3)
Psychogios et al. (2011)
Median (range) 180.0 (146.7–231.4) 194.8 (157.7–249.4) 213.4 (171.2–290.4) 213.3 (170.8–283.5) 217.7 (158.5–285.0) 229.0 (190.1–299.2)
%CV (SD) a 3.1 (3.5) 2.2 (1.8) 5.1 (3.0) 2.7 (2.2) 6.6 (6.8) 3.6 (2.1)
a

Percent coefficient of variation (%CV) was calculated as the mean (SD (%)) of the %CV for 48 samples (six tube types across eight subjects) that were individually prepared and analyzed in triplicate (three separate technical replicates) by 1H NMR (for a total of 144 samples).

b

Human Metabolome Database (HMDB) reference values presented as mean (SD) where available or mean (range).