TCB and TSB pairs at 8 and 12 hours after phototherapy
| Hours after PT | n | TSB (µmol/L) Mean±SD Median (IQR) | TCB (µmol/L) Mean±SD Median (IQR) | Mean difference (TCB–TSB) (µmol/L) Mean±SD Median (IQR) | Correlation (p value) |
| 8 hours | 40 | 133±51 | 95±54 | −37±28 | r=0.86 (<0.0001) |
| 124 (94–168) | 97 (53–138) | −32 (−49 to −22) | |||
| 12 hours | 36 | 147±52 | 131±51 | −16±19 | r=0.93 (<0.0001) |
| 135 (112–173) | 123 (95–154) | −17 (−23 to −7) |
PT, phototherapy; TCB, transcutaneous bilirubinometry; TSB, total serum bilirubin.