What's this test for?

This test is ideal if you're being evaluated for a blood disorder like myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML), or if a previous blood test showed unusual cell counts. It looks for a specific genetic change called a 20q deletion, which is one of the more common chromosome changes seen in these conditions. It's often ordered as a follow-up test to help clarify a diagnosis or understand what to expect going forward.

What happens after I get my results?

Your results will appear in your account along with an explanation of what a positive or negative finding means. If the deletion is found, next steps typically involve tracking the result over time alongside other blood work, since this specific change is generally associated with a more favorable outlook when it appears on its own. A downloadable lab report is available in your account, and you can use the trends feature to monitor changes if you retest in the future. If your results are unclear or concerning, seek medical care promptly to discuss what they mean for your situation.

Who should consider this test?

This test is a good fit for people who have already had abnormal findings on a complete blood count or bone marrow evaluation and need more specific genetic information. It's also useful for people with a known blood disorder who want to track whether this particular chromosome change is present, since it can affect prognosis. People with a family or personal history of blood cancers may also consider this as part of a broader workup.

What symptoms indicate I may need this test?

Symptoms like ongoing fatigue, easy bruising or bleeding, frequent infections, or unexplained weight loss can sometimes point toward a blood cell disorder that this test helps investigate. Pale skin, shortness of breath, or noticing your blood counts are consistently off in routine labs are also common reasons people look into this testing. These symptoms don't automatically mean anything serious, but they're worth checking further with targeted testing like this one.

When will I get my results?

Results for this test are typically available within about 7 days of your sample being processed at the lab. Because this is a specialized genetic test, it takes a bit longer than routine bloodwork. You'll be notified as soon as your results are ready to view in your account.

What is chromosome 20q deletion and why does it matter?

Chromosome 20q deletion means a small piece of genetic material is missing from chromosome 20 in your blood cells. This change is commonly seen in people with certain blood disorders and can help confirm a diagnosis. When it shows up by itself, without other chromosome changes, it's generally considered a sign of a better long-term outlook compared to other genetic abnormalities.

What does a positive result mean?

A positive result means the lab found cells with the 20q deletion, which supports a diagnosis of a myeloid disorder like MDS. On its own, this finding is usually linked to a milder disease course than many other chromosome abnormalities. It's important to look at this result together with your other blood work and any physical symptoms to get the full picture.

What causes this chromosome change?

Chromosome deletions like this one happen due to errors in how cells divide and copy their DNA over time. They are not inherited from your parents and aren't caused by anything you did — they occur spontaneously in blood-forming cells as part of the disease process. Age and prior chemotherapy or radiation exposure can increase the chances of these changes developing.

How often should I retest?

Retesting frequency depends on your specific situation and whether you're actively being monitored for a blood disorder. Many people repeat this type of testing every few months during active monitoring, or as recommended based on changes in routine blood counts. Using the trends feature in your account can help you and anyone managing your care see patterns over time.

What should I do if my results are abnormal?

If your results show the 20q deletion, keep a copy of your downloadable report and continue routine blood count monitoring to track any changes. Focus on supportive habits like eating a balanced diet, staying active, and avoiding infections, since these can help overall well-being during monitoring. If you notice new or worsening symptoms like severe fatigue, bleeding, or fever, seek medical care right away.

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.

20q Deletion FISH Test - MDS & Leukemia 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]

FISH Chromosome 20q Deletion Test for Blood Disorders

FISH, Chromosome 20q Deletion

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

What's this test for?

What happens after I get my results?

Who should consider this test?

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

Find a lab near you

FISH Chromosome 20q Deletion Test for Blood Disorders

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

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