Table 2.

Renal function and HGA values at alkaptonuria diagnosis

Parameter	Patient #1	Patient #2
Cr Cl (mL/s/1.73 m2)[(mL/min/1.73 m2)]	0.14 (8.96)	1.21 (72.5)
Urine HGA (g/day)a	0.9138	4.406

^aNormal value: 0.01–0.1 g/day (found in patients without alkaptonuria, including those with CKD).