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Comprehensive weight loss checkup testing metabolism, thyroid, hormones, and nutritional markers

Weight Loss Blood Test for Metabolism & Thyroid Issues

Weight Loss Checkup

  • Tracks health factors for weight loss
  • Monitors essential weight-related metrics
  • Checks body functions affecting weight
First results as soon as overnight*

90 day happiness guarantee

We stand behind our service

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

90 day happiness guarantee

We stand behind our service

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

What's this test for?

This test is ideal if you're struggling to lose weight despite diet and exercise, experiencing unexplained weight gain, or feeling like your metabolism isn't working properly. It helps identify hormonal imbalances, metabolic issues, thyroid dysfunction, and insulin resistance that could be sabotaging your weight loss efforts. Many people use this test when they suspect underlying health issues are preventing them from reaching their weight goals.

How should I prepare for this test?

Fasting: 12-14 hours
No biotin: 72 hours

You should fast for 12-14 hours before your blood draw, consuming only water during this time. If you take biotin supplements (over 5mg/day), stop taking them at least 72 hours before testing. Avoid rubbing testosterone cream into your inner elbow area for 24 hours before the test. If you're on prednisone or prednisolone, note that this may affect cortisol results.

What's included in this test?

T3, Free Cortisol, Total Dhea Sulfate Estradiol Ferritin Hemoglobin A1C Insulin

This comprehensive panel evaluates your metabolic function through glucose, insulin, and HbA1c to identify insulin resistance and blood sugar issues that cause weight gain. It checks thyroid hormones (TSH, Free T4, Free T3) that control your metabolism and energy expenditure, measures sex hormones (testosterone, estradiol, DHEA-S) that affect body composition, and assesses cortisol which impacts fat storage. The lipid panel, complete metabolic profile, and complete blood count provide a complete picture of your overall health and how efficiently your body processes nutrients and burns fat.

What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining how your metabolism, thyroid function, and hormone levels are affecting your weight. These notes include personalized recommendations like dietary adjustments, exercise modifications, supplement suggestions, or whether you should consider working with an endocrinologist or nutritionist. You'll also get the standard lab report and can track your biomarkers over time using our trends feature to see how your weight loss interventions are working.
When will I get my results?
Your results will typically be available within 7 business days after your blood sample is collected. If any biomarker requires confirmation testing, the turnaround time may be extended slightly. You'll be notified as soon as your results are ready to view.
Who should consider getting this test?
This test is perfect for anyone experiencing difficulty losing weight despite healthy habits, unexplained weight gain, or plateau in their weight loss journey. It's especially useful for people with symptoms like constant fatigue, sluggish metabolism, difficulty building muscle, increased belly fat, or those who suspect hormonal issues are affecting their weight. People over 40, those with family history of thyroid or metabolic disorders, and individuals with PCOS or insulin resistance concerns will find this particularly valuable.
What symptoms indicate I may need this test?
Consider this test if you're experiencing stubborn weight that won't budge with diet and exercise, constant fatigue or low energy, increased belly fat or changes in body composition, difficulty building or maintaining muscle, or feeling cold all the time. Other signs include brain fog, mood swings, increased appetite or sugar cravings, irregular periods (for women), low libido, or feeling like your metabolism has slowed down significantly.
How can I naturally support my metabolism and weight loss?
Start by prioritizing 7-9 hours of quality sleep each night, as poor sleep disrupts hormones that control appetite and metabolism. Focus on protein-rich meals to support muscle mass and stabilize blood sugar, and include strength training 3-4 times per week to build metabolically active muscle tissue. Manage stress through meditation or yoga since high cortisol promotes fat storage, especially around the belly. Stay hydrated, eat plenty of fiber-rich vegetables, and consider intermittent fasting if appropriate for your lifestyle.
What is insulin resistance and why does it matter for weight loss?
Insulin resistance occurs when your cells stop responding effectively to insulin, causing your body to produce more insulin to manage blood sugar. This excess insulin promotes fat storage, especially around your midsection, and makes it extremely difficult to lose weight even with calorie restriction. It also increases hunger and sugar cravings, creating a vicious cycle. Identifying and addressing insulin resistance through diet, exercise, and sometimes medication is often the key to successful weight loss.
How often should I retest when working on weight loss?
If you're actively working on weight loss and making lifestyle changes, retesting every 3-6 months is ideal to track your progress and see how your interventions are affecting your biomarkers. This allows you to see improvements in insulin sensitivity, thyroid function, and hormone balance over time. If you start medication or supplements for thyroid or metabolic issues, your doctor may recommend retesting sooner, typically after 6-8 weeks, to ensure proper dosing.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. 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.
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.

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

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Instant orders, results often overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
Insulin, Fasting 18.2 µIU/mL
Demo results
Low Optimal 2.6 - 13.0 High
18.2 µIU/mL

What this means

Your fasting insulin level is elevated, which suggests early insulin resistance. This means your body is producing extra insulin to manage blood sugar, which promotes fat storage and makes weight loss very difficult. Addressing this now can prevent progression to prediabetes and significantly improve your ability to lose weight.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Weight Loss Blood Test for Metabolism & Thyroid Issues

  • Tracks health factors for weight loss
  • Monitors essential weight-related metrics
  • Checks body functions affecting weight
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.

Ask Me Anything

Your 24/7 Personal Lab Guide

Quick questions:

What does this test measure?
How do I get $497 in free labs? 🎁
Do I need to fast for this test?
When will I get my results?
A

Hi, I'm here to make labs simple, clear, and stress-free. Not sure where to start? That's okay. Tell me what's going on and I'll guide you from there.

I can help you:

  • choose the right test
  • prepare for your lab visit
  • take the next step with confidence and more
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Not finding what you need? Text 754-799-7833, we've got you.
We provide helpful guidance, not medical diagnoses. For medical decisions, consult a licensed professional.