They can be triggered by long periods of time without eating, illnesses, and infections. Many of these signs may occur when your baby eats foods that their body cannot break down. If your child has mild TFP, their could start showing signs any time between 2 years of age and adulthood. If your baby has early TFP, you will start seeing signs between birth and age 2, whereas individuals with childhood TFP show signs after infancy. There are three distinct forms of trifunctional protein deficiency (TFP) based on the age of onset: early, childhood, and mild. Sometimes follow-up testing may also include testing a very small sample of skin. Because TFP has many of the same signs as another fatty acid oxidation condition called LCHAD, your baby’s doctor may order further testing to see if your baby has either condition. A specific pattern of acylcarnitines in the blood and organic acids in the urine might indicate that your baby has TFP. Certain acids and toxins build up in the body when a child has an fatty acid oxidation condition, so measuring the levels of these substances in your baby’s body can help doctors determine if your baby has a condition. Because the harmful effects of untreated TFP can occur soon after birth, follow-up testing must be completed as soon as possible to determine whether or not your baby has the condition.įollow-up testing will involve checking your baby’s urine and blood samples for harmful levels of acids and toxins. However, as a few babies do have the condition, it is very important that you go to your follow-up appointment for a confirmatory test. An out-of-range result may occur because the initial blood sample was too small or the test was performed too early. It is important to remember that an out-of-range screening result does not necessarily mean that your child has the condition. If your baby’s newborn screening result for trifunctional protein deficiency (TFP) was out of the normal range, your baby’s doctor or the state screening program will contact you to arrange for your baby to have additional testing. If your baby has certain signs, your baby’s doctor may suggest starting immediate treatment. Your baby’s doctor may ask you if your baby is showing any of the signs of TFP (see Early Signs, below).
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