What's this test for?

This test is ideal if you're experiencing chronic diarrhea, greasy or foul-smelling stools, or unexplained weight loss. It checks whether your digestive system is properly breaking down food, especially protein and fat. It's often used when digestion problems have been going on for a while and you want to understand what might be causing them.

What happens after I get my results?

Your results will show up in your account along with an explanation of what a normal versus abnormal finding means for this test. If muscle fibers are found, simple next steps include reviewing your diet, staying hydrated, and considering a follow-up test if symptoms continue. The full lab report is available to download from your account any time, and you can track results over time using the trends feature.

What symptoms indicate I may need this test?

Common signs include ongoing diarrhea, loose or watery stools that happen often, oily or floating stools, unexplained weight loss, or signs your body isn't absorbing nutrients well like fatigue or bloating. If food seems to pass through you too quickly, this test can help figure out if that's affecting digestion. It's also useful if you've had digestive symptoms for weeks without a clear reason.

How can I naturally support healthy digestion?

Eating smaller, more frequent meals can ease the load on your digestive system, and chewing food thoroughly helps your body break it down better. Adding fiber gradually, staying hydrated, and reducing greasy or fried foods can also help reduce diarrhea and improve nutrient absorption. Probiotic-rich foods like yogurt or kefir may support gut bacteria balance too.

When will I get my results?

Results are typically ready within about 7 days after your sample is processed at the lab. You'll get a notification once they're available, and you can log into your account to view the full report at that time.

Who should consider this test?

Anyone dealing with persistent digestive issues like chronic diarrhea, unexplained weight loss, or greasy stools should consider this test. It's also helpful for people who suspect their body isn't absorbing nutrients properly, or who want a clearer picture before making diet or lifestyle changes. If you've had ongoing stomach troubles that haven't resolved on their own, this test can offer useful insight.

What does it mean if muscle fibers are found in my stool?

Finding muscle fibers in your stool usually means food is moving through your digestive tract too fast, or your body isn't fully breaking down protein and fat. This can happen with conditions that cause diarrhea or malabsorption. It's a useful clue, but usually needs to be looked at alongside your symptoms and other test results.

What causes muscle fibers to show up in stool testing?

The most common causes are diarrhea with fast transit time, meaning food moves through your gut before it's fully digested, or steatorrhea, which is when fat isn't properly absorbed. Certain digestive conditions, infections, or diet changes can trigger this. Identifying the root cause often involves looking at your overall symptoms and diet history.

How often should I retest?

If your symptoms go away after making diet or lifestyle changes, you likely don't need to retest right away. If digestive symptoms persist or come back, retesting after a few weeks can help track whether things are improving. Ongoing or worsening symptoms are a good reason to test again sooner.

What should I do if my results are abnormal?

Start by reviewing your diet, especially fat and fiber intake, and note any patterns with your symptoms. Simple changes like eating smaller meals, cutting back on greasy foods, and staying hydrated can help in mild cases. If diarrhea is severe, persistent, or you notice signs of dehydration or significant weight loss, 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.

Fecal Muscle Fibers Test - Digestion & Diarrhea Check

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

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