Table 1.

Characteristics of the volunteers participating and the dosages of 5-¹³C-glutamine infused and their pre- and post-blood plasma urea nitrogen (BUN) and ammonia levels

Pt #	Age	Sex	Glutamine dose		BUN (mg/dL)		NH3 (μmol/L)
			Prime dose	Infusion dose	Pre	Post	Pre	Post
1a	35	F	3 mg/kg	3 mg/kg	15	14	< 10	15
2a	24	M	3 mg/kg	3 mg/kg	20	15	12	< 10
3a	27	F	3 mg/kg	3 mg/kg	16	16	< 10	< 10
4a	29	M	3 mg/kg	3 mg/kg	12	12	15	18
5	24	M	3.5 mg/kg	3.5 mg/kg	16	15	< 10	< 10
6	29	F	4 mg/kg	4 mg/kg	19	13	< 10	24
7	52	F	4 mg/kg	4 mg/kg	9	13	< 10	19

^aThe participants whose non-malignant plasma cells from the marrow were unable to undergo isotopomer assessments by GC-MS due to technical complications