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Table 11 Daily levodopa metabolites in plasma, inpatient days 1–3 and week 3 SD and KD group, mean (standard deviation)

From: A randomized feasibility trial of medium chain triglyceride-supplemented ketogenic diet in people with Parkinson's disease

Standard Diet

Dopamine-(3 and 4) sulfate (pmol/mL)

Dopamine (pmol/mL)

DOPAC (pmol/mL)

Day 1 AM

31.07 (17.57)

0.88 (0.46)

12.07 (4.26)

Day 1 PM

25.41 (11.70)

0.92 (0.27)

13.44 (6.92)

Day 2 AM

41.35 (13.28)

0.55 (0.16)

9.11 (3.35)

Day 2 PM

24.36 (9.98)

1.10 (0.43)

14.21 (9.24)

Day 3 AM

26.23 (9.77)

0.96 (0.40)

16.88 (6.96)

Day 3 PM

45.63 (38.67)

1.22 (0.56)

29.48 (6.63)

Wk 3 AM

42.48 (31.63)

2.16 (2.29)

24.87 (13.70)

Keto Diet

Dopamine-(3 and 4) sulfate (pmol/mL)

Dopamine (pmol/mL)

DOPAC (pmol/mL)

Day 1 AM

31.33 (11.64)

1.08 (0.52)

10.17 (3.70)

Day 1 PM

28.07 (9.25)

1.18 (0.53)

11.23 (3.03)

Day 2 AM

44.46 (22.28)

0.62 (0.46)

22.28 (18.76)

Day 2 PM

27.92 (13.90)

1.69 (0.50)

16.44 (10.25)

Day 3 AM

15.79 (5.64)

1.02 (1.04)

32.16 (6.90)

Day 3 PM

26.92 (6.87)

2.13 (1.57)

25.85 (9.85)

Wk 3 AM

24.66 (7.75)

1.35 (1.10)

24.01 (16.50)

  1. DOPAC = 3,4-Dihydroxyphenylacetic acid