What should you know about dark urine in diaper?

A wet diaper may look darker after urine sits against the absorbent material, so note the colour in fresh urine if possible.

Deep yellow urine can occur when a child has taken less fluid, has fever, or has been sweating. Red, pink, tea-coloured, or cola-coloured urine is different and may represent blood or a change linked with the liver or muscles. Foods, vitamins, and medicines can also alter colour. Dark urine does not by itself identify a particular condition.

Watch for fewer wet diapers, a dry mouth, no tears when crying, unusual sleepiness, vomiting, diarrhoea, fever, yellow skin or eyes, or pain while passing urine. These accompanying details help a clinician judge whether dehydration, infection, or another problem is present.

Check the diaper promptly and record when the colour appeared, how often the child urinates, and any new food, supplement, or medicine. Offer the child’s usual age-appropriate fluids; do not force large amounts or give an unapproved drink to a young infant. Keep the diaper or take a clear photograph if the change is difficult to describe. Contact a clinician if the colour persists after normal drinking or keeps returning.

Seek urgent medical help if the child is hard to wake, has trouble breathing, cannot keep fluids down, has very few wet diapers, or appears severely unwell. Arrange prompt assessment for red or brown urine, yellowing of the eyes or skin, fever with painful urination, or dark urine with significant abdominal or back pain. Read more about [Dehydration](/conditions/dehydration/) and [Dark Urine](/symptoms/dark-urine/).

Ask: Could the diaper material or a food explain the colour? Does my child need a urine test? How much fluid is suitable for their age? Which signs should make us return urgently? Mention the timing of the colour change, recent illness, medicines, and the number of wet diapers.