What's this test for?

This test is ideal if you're being evaluated for a sex chromosome abnormality or a specific genetic condition that needs specialized chromosome analysis. It uses a technique called FISH (fluorescence in situ hybridization) to look closely at the SRY gene and X centromere, which can help explain unusual development patterns, fertility concerns, or ambiguous genetic findings. It's typically used as a follow-up test when other results point to a possible chromosome question that needs more detail.

How should I prepare for this test?

See the pre-collection instructions on your order confirmation.

What happens after I get my results?

Your results will show up securely in your account along with an explanation of what a normal versus abnormal finding looks like for this type of chromosome analysis. Because this is a specialized test, next steps depend heavily on what's found, so read the explanation notes carefully and consider retesting or additional genetic testing if the report suggests it. A full downloadable lab report is always available in your account for your records. You can also track this and any future related tests over time using the trends feature.

Who should consider this test?

This test is generally considered by people who have already had an initial genetic or chromosome finding that needs more clarity, such as an unclear result on a karyotype or a suspected sex chromosome variation. It may also be relevant for those with a family history of specific chromosomal conditions. If you were directed toward this specific test, it's usually because a more general test wasn't detailed enough to answer the question at hand.

When will I get my results?

Results for this specialized FISH test typically take about 7 days to process because the lab technique involves detailed chromosome imaging and analysis. You'll receive an email notification as soon as your results are ready to view in your secure account. This is a bit longer than routine blood work due to the specialized nature of the analysis.

What symptoms indicate I may need this test?

You might be pointed toward this test if you have signs of atypical physical development, unexplained fertility challenges, or ambiguous genetic characteristics noticed at birth or later in life. It's also used when a previous genetic test came back with an unclear or borderline result. This is a targeted, follow-up type test rather than a first-line screening for general symptoms.

What is the SRY gene and why does it matter?

The SRY gene is a small piece of genetic material that normally sits on the Y chromosome and signals the body to develop male characteristics. Looking at whether this gene is present, missing, or in an unexpected location can help explain certain differences in sex development or unusual chromosome patterns. The X centromere portion of the test gives a reference point to compare against, helping confirm how many X chromosomes are present.

What does an unexpected SRY finding mean?

An unexpected finding — like the SRY gene being present when it's not expected, or absent when it is expected — can help explain differences in physical development or reproductive health. This kind of result is usually meant to be read alongside other genetic or chromosome tests to build a full picture, not on its own. It does not mean anything is medically urgent by itself, but it is often a good reason for follow-up genetic testing.

How often should I retest?

This is not a test you'd typically repeat routinely since chromosome makeup doesn't change over time. Retesting would generally only make sense if there was a lab processing issue, a sample quality concern, or if a new symptom prompts a fresh look with updated testing methods. Otherwise, one accurate result is usually all that's needed for this type of genetic analysis.

What should I do if my results are abnormal?

If your report shows an abnormal or unexpected finding, take time to read the full explanation included in your report, since these results can be nuanced. Consider following up with additional genetic testing if the report suggests it, and keep a copy of your downloadable report for your own records. If you have any concerning physical symptoms alongside the result, don't hesitate to seek medical care promptly.

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.

FISH SRY/X Centromere Test - Chromosome Analysis

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 SRY/X Centromere Genetic Chromosome Test