TcB measurements are used to screen the otherwise well term infant who is greater than 24 hours of age to determine the need for a Laboratory Total Serum Bilirubin (TSB).
In addition to the TcB reading, it is essential to consider the presence of any risk factors associated with moderate to severe jaundice in the term infant.
TcB measurement results should not be confused with bilirubin concentration in the serum. The former can (and perhaps should) be used as a safe surrogate in term and late preterm neonates older than 48 hours for moderate hyperbilirubinemia.
The accuracy of the instrument may be affected by variation of skin pigmentation and its thickness.