Table 3. Baseline Amino Acid Levels of HIV-infected and HIV-negative patients.

	HIV-infected (n = 16)	HIV-negative (n = 46)
	Mean±SEM		p-value
Glycine (µmol/L)	235±21.4	237±12.6	0.866
Alanine	153±27.4	217±16.2	0.0330
Serine	99.2±99.5	113±5.6	0.464
Proline	152±14.4	153±8.5	0.904
Valine	100±10.7	75.6±6.3	0.0248
Leucine/Isoleucine	82.0±8.9	70.5±5.2	0.237
Methionine	16.1±1.7	15.6±1.0	0.742
Histidine	69.1±7.0	53.3±4.1	0.250
Phenylalanine	79.6±7.7	43.0±4.5	0.0067
Tyrosine	30.1±4.6	22.6±2.7	0.207
Aspartate	39.2±4.8	36.5±2.8	0.853
Glutamate	111±10.5	91.3±6.2	0.435
Ornithine	27.4±3.5	26.2±2.1	0.381
Citrulline	8.9±1.2	8.2±0.7	0.421
Arginine	28.3±3.3	27.7±1.9	0.323