What's this test for?

This test is ideal if you have a known family history of cystic fibrosis where the specific gene changes (variants) run in your family but aren't covered by standard carrier screening. It looks at two particular exons, or regions, of the CFTR gene where your relative's specific variant has already been identified. This is not a general screening test — it's meant for people who already know which exact variants to look for based on family genetic history.

What happens after I get my results?

Your results will appear securely in your account, with an explanation of what each finding means in plain language. If a variant is found, the next step is usually genetic counseling to understand what it means for your health or family planning, and you may want to share the report with family members who could also be carriers. You can download the full lab report directly from your account at any time, and if you retest in the future, you'll be able to track your results over time using the trends feature.

What's included in this test?

This test analyzes two specific exons (gene regions) of the CFTR gene, targeting the exact familial variant locations that have already been identified through prior genetic testing in your family — it does not cover the broader set of variants included in standard CF carrier screening panels. Analyzing these exact regions matters because it can confirm whether you carry the same specific variant, which is more precise than a general panel when the variant is already known.

How can I naturally support healthy respiratory and digestive function?

While genetic variants can't be changed through lifestyle, supporting your lungs and digestion with good habits can help overall wellness while you wait on results or plan next steps. Staying active, avoiding smoke exposure, and eating a balanced diet rich in fruits and vegetables support both respiratory and digestive health. Staying well-hydrated also helps keep mucus thinner, which is beneficial for lung function. These steps are general wellness habits, not a substitute for genetic counseling if a variant is confirmed.

When will I get my results?

Results are typically ready within about 7 days of your sample being processed at the lab. Because this is a specialized genetic test looking at specific gene regions, it takes a bit longer than routine blood work. You'll get a notification as soon as your results are posted to your secure account.

Who should consider this test?

This test is best for people who have a close family member with a confirmed cystic fibrosis diagnosis and a known variant located in one of these two specific CFTR exons. It's often used when a standard CF carrier panel didn't cover the exact variant known to run in the family. If you're unsure whether this is the right test, standard carrier screening panels that cover a broader range of common variants may be more appropriate.

What symptoms indicate I may need this test?

This test isn't typically chosen based on your own symptoms — it's chosen based on family history. However, if you or a family member have experienced frequent lung infections, chronic digestive issues, or unusually salty-tasting skin, and there's a known CF variant in the family in these specific gene regions, this targeted test may be relevant. It's most useful for confirming a specific known variant rather than diagnosing new symptoms.

What does it mean if a CFTR variant is found?

Finding a variant means you carry a specific genetic change in the CFTR gene that has been identified in your family. Depending on which variant and whether you have one or two copies, this could mean you're a carrier with no symptoms, or it could be more clinically significant. Genetic counseling can help explain exactly what your specific result means for your health and any children you may have or plan to have.

How often should I retest?

This type of genetic test generally doesn't need to be repeated, since your CFTR gene sequence doesn't change over time. You would only consider retesting if a lab error was suspected or if a different family variant later needs to be checked. Unlike blood chemistry panels, this is typically a one-time test per specific variant.

What should I do if my results show a variant?

If a variant is identified, consider connecting with a genetic counselor to fully understand the implications for your health and family planning. It's also a good idea to share this information with close biological relatives, since they may carry the same variant and benefit from testing. Keep a copy of your downloadable report for future reference, especially if you plan to have children or need to inform other specialists later.

Getting your blood test with us is easy, private & backed by the power of science.Long story short: In the test options, use the filters or search box to narrow your choices and find the test you want. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

How do I know which test to get?

In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option. Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?

Absolutely! We totally understand that errors can happen. No worries, we're here to help you. Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you. There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out. Our lab requires an address to be listed to generate an order.

Do you accept health insurance?

Only HSA & FSA is accepted. Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts. This policy applies to all insurance companies, including federal health insurance programs like Medicare. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

Can I cancel my order?

Yes. We get it – sometimes your needs change. As long as your samples haven’t been collected yet, we’re happy to help you cancel your order. If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com. You can read more about our cancellation policy here.

How can I find a lab location near me?

During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp). Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

CF Rare Variant Test - Two Exon Family Screening

Getting your blood test with us is easy, private & backed by the power of science.

Long story short:

In the test options, use the filters or search box to narrow your choices and find the test you want.
If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!

754-799-7833

[email protected]

Cystic Fibrosis Rare Variant Test — Two Exon Analysis

Cystic Fibrosis Rare Variant Analysis, Two Exon

Prescription & fees included

Easy to understand results

Fast & convenient

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

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Cystic Fibrosis Rare Variant Test — Two Exon Analysis

Prescription & fees included

Easy to understand results

Fast & convenient

1,000,000+ blood tests later, here's what our customers say