It would be unlikely that jaundice is present with a bilirubin of 0.9.
Possible causes would include oral thrush - which can be cultured for and treated with an antifungal medication.
Another possibility would be something called hairy oral leukoplakia, which is associated with immunocompromise and Epstein-Barr virus. This can present with white plaques on the tongue.
If there continues to be confusion as to the lesions, a referral to an oral surgeon for possible biopsy can be considered.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b