PKU
A plain-language introduction for families, patients, and anyone new to phenylketonuria.
The basics
Phenylketonuria (PKU) is an inherited condition that affects how the body processes phenylalanine (Phe), an amino acid found in protein. In PKU, the enzyme that normally breaks down Phe (phenylalanine hydroxylase, made from the PAH gene) does not work properly, so Phe can build up in the blood.
Without treatment, high Phe levels can harm the brain. PKU is usually found through newborn screening shortly after birth, so treatment can start early.
Monitoring
PKU is managed with a carefully balanced diet. Too much Phe can affect the brain, while too little protein can affect growth and health, so the balance matters.
Blood Phe levels change with diet, growth, illness, and other factors. Regular blood Phe measurements help people with PKU and their metabolic clinic see how the treatment plan is working and when it may need to change.
Today
Today, blood Phe is usually measured in a laboratory. Samples are often collected away from the lab and must be sent there for analysis.
Laboratory-based Phe monitoring can take several days, particularly when samples must be mailed to a laboratory.
That wait can make it harder to connect a result with the food choices and circumstances that led to it, and to adjust the plan in a timely way.
Treatment
The main treatment for PKU is a diet low in Phe. Many common foods, such as milk, eggs, and meat, are high in protein and therefore Phe. The sweetener aspartame also contains Phe.
Because natural protein is limited, many people with PKU use special medical foods (formula) that provide protein with little or no Phe. Medication may be an option for some people. Your metabolic clinic can explain which options fit you.
Every life stage
Treatment starts early, and the diet is carefully managed while a child grows.
Treatment is generally recommended for life, with ongoing support from a metabolic clinic.
Phe control before and during pregnancy is especially important. Talk to your clinic before planning a pregnancy.
Where we fit in
Omaroon is developing an investigational quantitative phenylalanine monitoring system, combining a single-use test, compact reader, and connected workflow. Current development is focused on professional-use evaluation using prepared plasma. Connected home monitoring is a planned future extension, subject to additional development, validation, and applicable regulatory authorization.
Investigational device. Not FDA cleared or approved. Not available for commercial clinical use. Keep following the testing plan from your metabolic clinic.
Questions
Phenylketonuria (PKU) is an inherited condition in which the body cannot properly break down the amino acid phenylalanine (Phe). People with PKU follow a carefully managed diet and have regular blood Phe tests reviewed with their metabolic clinic.
No. Omaroon's quantitative Phe monitoring system is investigational. It is not FDA cleared or approved and is not available for commercial clinical use. Please keep following the testing plan from your metabolic clinic.
No. Current development is focused on professional-use evaluation using prepared plasma. Connected home monitoring is a planned future extension, subject to additional development, validation, and applicable regulatory authorization.
No. Information on this site is general education. Always follow the guidance of your metabolic care team, and call 911 in an emergency.
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