What Does NxGen MDx Screen For?

We screen for up to 120 genetic disorders that can affect your pregnancy, the health of your baby, and your family's future. You can learn more about our various screens — and which sets of screens (or "panels") align with where you are in your reproductive journey.

What Does NxGen MDx Screen For?

Primary Carnitine Deficiency

What Your Test Results Mean:

Test results indicate that you are a carrier of primary carnitine deficiency. Carriers typically show no symptoms. Risk for current or future pregnancies is dependent on your partner’s carrier status. Carrier testing of your partner is recommended in addition to consultation with a genetic counselor for more detailed risk assessment.

Since this is an inherited gene change, this information may be helpful to share with family members as it may impact their family planning and their own personal clinical management.

Disease Explained:

Primary carnitine deficiency is an inherited metabolic disorder that impairs the body’s uptake of carnitine, a molecule necessary for converting lipids into metabolic energy. The disease has a variable spectrum of symptoms, from a severe infantile presentation to completely asymptomatic adults. In affected infants, periods of fasting or illness can trigger symptoms, which include low blood sugar, lethargy, and irritability. These symptoms must be treated immediately or there is a risk of coma and death. Affected individuals who present during childhood can have dilated cardiomyopathy and skeletal muscle weakness. These affected children can die from cardiac failure if not treated promptly. Some affected individuals can be mostly asymptomatic throughout their lives, though there is still risk for cardiac symptoms.


Prognosis is good with treatment but can be extremely poor if left untreated.


L-carnitine supplementation is the preferred method of treatment for this disorder. Individuals respond well to treatment if started before irreversible organ damage occurs and there are relatively few side effects.

Which Screens Are Right for You?

Determining which screens or set of screens are right for you will depend on where you are in your reproductive journey. Tell us where you are today so you can learn more about how to move forward tomorrow.

Planning to Have a Baby Already Expecting
Which Screens Are Right for You?

Talk to a Genetic Counselor

As a NxGen client, you'll have access to personal genetic counselors who can help explain the results of your screens and provide insight on how to move forward. To schedule a personal conference to discuss your screen results, call (855) 776-9436. or click the link below.

Discuss Your Screening Results