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Hair loss test for women checking hormone imbalances, nutrient deficiencies, and thyroid function

Blood Test for Hair Loss and Thinning Hair

Hair Loss Trust Me Light

  • Pinpoint the cause of your hair loss
  • Reveal nutrient deficiencies affecting your hair
  • Confirm hormone imbalances impacting hair growth
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 experiencing noticeable hair loss, thinning hair, or bald patches and want to understand why. It helps identify underlying causes like hormone imbalances, thyroid problems, nutrient deficiencies, or autoimmune conditions that may be contributing to your hair loss. Many people use this test when they notice more hair in the shower drain, a receding hairline, or changes in hair texture and want concrete answers before trying treatments.

How should I prepare for this test?

Fasting: 12 hours

You should fast for 12 hours before your blood draw, meaning no food or beverages except water during that time. If you're taking high-dose biotin supplements (more than 5 mg per day), wait at least 8 hours after your last dose before testing, as biotin can interfere with results. If you use testosterone cream, avoid applying it to the inner elbow area for 24 hours before your test to prevent artificially elevated results.

What's included in this test?

Ana Screen, Ifa Ferritin Vitamin B12

This comprehensive panel evaluates thyroid function through TSH and T4 levels, which directly impact hair growth cycles and can cause hair loss when imbalanced. It checks hormone levels including testosterone that affect hair health, measures ferritin and B12 to identify nutrient deficiencies that commonly cause hair thinning, and includes autoimmune screening (ANA) to detect conditions like alopecia areata. The Complete Blood Count checks for anemia, and the Comprehensive Metabolic Profile ensures your overall health isn't affecting your hair. Together, these measurements help pinpoint the root cause of your hair loss so you can address it effectively.

What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining what your hormone levels, thyroid function, and nutrient status mean for your hair health. These notes include personalized recommendations like dietary changes to address deficiencies, supplement suggestions, lifestyle modifications, or whether you should consult a dermatologist or endocrinologist. You'll also get the standard lab report and can track your levels over time using our trends feature to see how your interventions are helping your hair recovery.
When will I get my results?
Your results will typically be available within 7 business days after your blood is drawn. If any confirmatory testing is needed for specific markers, it may take a few additional days. You'll be notified as soon as your complete results and doctor notes are ready to view in your account.
Who should consider this test?
This test is perfect for anyone experiencing unexplained hair loss, thinning hair, or changes in hair texture and volume. It's especially useful for women with hormonal changes during pregnancy, postpartum, or menopause, people with a family history of thyroid disease or autoimmune conditions, and anyone who has tried hair loss treatments without success and wants to identify the underlying cause.
What symptoms indicate I may need this test?
You may need this test if you notice increased hair shedding when brushing or washing, a widening part line, thinning at the crown or temples, or patchy bald spots. Other signs include brittle or dry hair texture, slower hair growth than usual, fatigue or weight changes that accompany hair loss, or if your hair loss is affecting your confidence and quality of life.
How can I naturally support my hair health?
Supporting hair health starts with eating a nutrient-rich diet including protein, iron-rich foods like lean meats and leafy greens, and foods high in biotin, zinc, and omega-3 fatty acids. Managing stress through meditation, yoga, or regular exercise helps balance hormones that affect hair growth. Getting adequate sleep, avoiding tight hairstyles that pull on hair, limiting heat styling, and using gentle hair care products can also protect and encourage healthy hair growth.
What is ferritin and why does it matter for hair loss?
Ferritin is a protein that stores iron in your body, and adequate ferritin levels are essential for healthy hair growth. Low ferritin is one of the most common causes of hair loss, especially in women, even if you're not anemic. Your hair follicles need sufficient iron stores to function properly, and when ferritin drops too low, your body prioritizes vital organs over hair growth, leading to increased shedding and thinning.
What does low ferritin mean for my hair?
Low ferritin means your body's iron stores are depleted, which can significantly impact hair growth and lead to increased hair shedding. Even if your hemoglobin is normal, low ferritin can cause diffuse hair thinning across your scalp. This is especially common in women with heavy periods, vegetarians, or anyone with absorption issues, and is one of the most treatable causes of hair loss once identified.
How often should I retest after starting hair loss treatment?
If you're addressing nutrient deficiencies or starting thyroid medication, retest in 8-12 weeks to see if your levels are improving and if your hair loss is slowing. Since hair growth cycles take time, you may need to retest every 3-6 months to monitor progress and adjust your treatment approach. Once your levels are optimized and hair loss has stabilized, annual testing can help ensure you maintain healthy levels and catch any changes early.
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
Ferritin 22 ng/mL
Demo results
Low Optimal 30 - 200 High
22 ng/mL

What this means

Your ferritin level is below the optimal range, which is a common cause of hair loss, especially in women. Low ferritin means your iron stores are depleted, and your hair follicles aren't getting the iron they need to support healthy hair growth. This can lead to increased shedding and thinning, but the good news is that it's one of the most treatable causes of hair loss once identified.

* 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

Blood Test for Hair Loss and Thinning Hair

  • Pinpoint the cause of your hair loss
  • Reveal nutrient deficiencies affecting your hair
  • Confirm hormone imbalances impacting hair growth
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.

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We provide helpful guidance, not medical diagnoses. For medical decisions, consult a licensed professional.