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Table 2: Quality control for HP-¹³C injections
Participant ID EPA Conc. (µM) [1-¹³C] Pyruvate Conc. (mM) Volume Injected (mL) Polarization (%) Temp. (^oC) pH Time to Injection (sec)
P-01 1.6 230 23.0 44.0 34.6 7.7 56
P-02 0.6 232 21.8 42.5 31.9 7.6 75
P-03 0.5 235 16.0 38.8 31.0 7.7 66
P-04 0.3 230 36.0 38.1 30.7 7.7 53
P-05 0.5 231 20.8 43.9 32.1 7.6 55
P-06 1.4 242 22.2 33.6 30.9 7.5 70
Note:—EPA indicates electron paramagnetic agent; Conc., concentration; Temp, temperature.

Participant ID	EPA Conc. (µM)	[1-¹³C] Pyruvate Conc. (mM)	Volume Injected (mL)	Polarization (%)	Temp. (^oC)	pH	Time to Injection (sec)
P-01	1.6	230	23.0	44.0	34.6	7.7	56
P-02	0.6	232	21.8	42.5	31.9	7.6	75
P-03	0.5	235	16.0	38.8	31.0	7.7	66
P-04	0.3	230	36.0	38.1	30.7	7.7	53
P-05	0.5	231	20.8	43.9	32.1	7.6	55
P-06	1.4	242	22.2	33.6	30.9	7.5	70