A six-day old female baby having a history of birth asphyxia having decrease urine out put. Her CBC is wnl. Crp negative. Creatinine 0.3 blood urea 39.

USG abdomen normal. Baby is slightly lethargic taking breast feed needs several stimuli while breast feeding and spoon feed. Passing urine 4_5 times in 24 hrs. How to interpret 39 blood urea with 0.3, creatinine in this case?