Patients with BA have elevated DB, but not TB, levels at 24 to 48 HoL. Shown are the mean DB (A) and TB (B) levels for controls (n = 300; collection time: 39 ± 5.6 HoL) versus patients with BA (n = 24; collection time: 34 ± 6.2 HoL). The dashed lines indicate the upper limits of normal (A, 0.5 mg/dL), or the approximate phototherapy level at 34 HoL (B, 11.2 mg/dL). a
P < .0001.