<prompt> A new born presented with Jaundice. Most common diagnostic Investigation of choice isTotal and Direct BilirubinConjugated BilirubinSerum BilirubinUroporphyrin levels  <response>: Bilirubin test : If it;s thought your baby has jaundice, the level of bilirubin in their blood will need to be tested. This can be done using: a blood test of a sample of blood taken by pricking your baby;s heel with a needle the level of bilirubin in the liquid pa of the blood called the serum is then measured. Reference: GHAI Essential pediatrics, 8th edition 