Have you ever gotten that dreaded Exagen Diagnostics bill in the mail and thought, “How the heck am I supposed to pay this thing?” Trust me, I’ve been there. After dealing with autoimmune testing and then facing the confusing world of medical billing the last thing you need is a payment headache. Good news! I’ve put together this complete guide to make paying your Exagen bill as painless as possible.
Who is Exagen Diagnostics Anyway?
Before diving into payment options, let’s quickly understand who we’re dealing with Exagen Inc. (formerly known as Exagen Diagnostics) is a specialized laboratory based in Vista, California that focuses on autoimmune disease testing They’re not just any lab – they’re patient-focused experts who develop and provide specialized AVISE tests for conditions like lupus, rheumatoid arthritis, and other autoimmune disorders.
Their tests help doctors diagnose, monitor, and manage these complex conditions If you’ve received a bill from them, you’ve likely had specialized autoimmune testing that your doctor ordered to help with your diagnosis or treatment monitoring
3 Easy Ways to Pay Your Exagen Diagnostics Bill
Let’s get to the main point – how to pay that bill! You have several options, and I’ll walk through each one.
1. Pay Online Through MyLabBill.com
This is probably the easiest and most direct way to pay:
- Visit MyLabBill.com
- Select “Patients” option on the homepage
- You’ll need your account information from your bill
- Follow the prompts to complete your payment
What I like about this option is that it’s straight from Exagen, so you know your payment is going directly to the right place. It’s secure and gives you a confirmation immediately.
2. Pay Through Doxo
If you prefer a service that manages multiple bills, Doxo is a solid option:
- Go to Exagen’s Doxo page
- Click “Pay Bill”
- Create a Doxo account if you don’t already have one
- Enter your payment information
The cool thing about Doxo is that you can:
- Pay with credit card, debit card, Apple Pay, or bank account
- Keep track of your payment history in one place
- Get reminders about due dates
- Manage all your bills (not just Exagen) in one app
Pro tip: Paying with a linked bank account on Doxo is FREE. They’ll charge fees for other payment methods, so check those fees before you proceed!
3. Pay Directly Through Exagen’s Website
Exagen also offers a payment option right on their own website:
- Visit Exagen.com
- Look for the “Resources” section
- Click on “Pay Bill”
- Follow the prompts to complete your payment
This option keeps everything within Exagen’s ecosystem, which some people prefer for security and simplicity.
What If I Have Questions About My Bill?
Medical bills can be confusing – believe me, I’ve stared at plenty wondering what all those codes mean! If you have questions about your Exagen bill, here’s what to do:
- Call them directly: Their customer service number is 888-452-1522
- Email them: You can reach customer support at [email protected]
- Check online: Sometimes the billing portal can provide explanations for charges
When I called them last year about a billing question, I found their team to be really helpful in explaining the different test components and why my insurance covered certain parts but not others.
Insurance and Billing Information
One of the most common concerns with specialty lab testing is insurance coverage. Exagen works with many insurance providers, but coverage varies wildly depending on:
- Your specific insurance plan
- The type of AVISE test ordered
- Your diagnosis codes
- Whether your doctor obtained pre-authorization
If your test wasn’t fully covered, don’t panic! Exagen offers several options:
- Payment plans: Break that big bill into manageable chunks
- Financial assistance: They may offer programs to help if you qualify
- Insurance advocacy: Sometimes they can help appeal a denial
Common Questions About Exagen Billing
How long do I have to pay my bill?
Typically, you have 30 days from receiving your bill before it becomes past due. However, rather than letting it go to collections, reach out to Exagen directly if you need more time.
Why is my Exagen test so expensive?
Specialty autoimmune testing involves complex laboratory techniques and expert analysis. Tests like AVISE Lupus or AVISE CTD provide valuable diagnostic information that regular labs can’t offer. These specialized tests require advanced technology and expertise, which is reflected in the cost.
Can I set up automatic payments?
Yes! If you’re on a payment plan, most of the online portals allow you to set up automatic payments to avoid missing any installments.
What if my insurance denied the claim?
This happens sometimes, especially with specialty testing. Contact Exagen’s billing department right away. They may be able to:
- Appeal the denial with additional information
- Resubmit with different coding
- Offer you a reduced self-pay rate
Why I Recommend Online Payment Options
After trying all these methods personally (yes, autoimmune testing is part of my life too!), I’ve found that online payment is definitely the way to go. Here’s why:
- Instant confirmation: You know immediately that your payment went through
- Documentation: You get receipts and payment records automatically
- Convenience: Pay anytime, anywhere (even at 2am in your pajamas!)
- Security: Good payment portals use encryption to protect your information
The MyLabBill portal is my personal favorite because it’s specifically designed for Exagen’s billing system, but Doxo is great if you want to manage multiple bills in one place.
My Personal Experience with Exagen Billing
Last year, I had several AVISE tests done as my doctor was trying to figure out what was causing my symptoms. When the bills came, I was initially overwhelmed by the amount, especially since my insurance only covered about 60%.
I called the number on my bill (888-452-1522) and spoke with a billing specialist who walked me through:
- Which tests were performed and why
- How the insurance processed each component
- What my options were for the remaining balance
We set up a 6-month payment plan that I could manage with my budget. I chose to use the MyLabBill portal to make monthly payments, and it was surprisingly easy. The system remembered my information, sent me reminders, and gave me receipts each time.
Tips for Smooth Billing Experience
After going through this process multiple times, here are some tips I’ve learned:
- Save your account number: Keep it somewhere handy so you don’t have to dig through papers each time you make a payment
- Set calendar reminders: If you’re on a payment plan, add those due dates to your calendar
- Keep documentation: Save all receipts and confirmation numbers
- Check your insurance first: Before having tests done, ask your doctor or Exagen about insurance coverage
- Act quickly on bills: The sooner you address any issues, the more options you’ll have
What Makes Exagen Testing Different
While we’re focused on bill payment here, it’s worth understanding what makes Exagen’s testing unique. Unlike standard laboratory tests, AVISE tests use advanced biomarkers and proprietary technology to help diagnose and monitor autoimmune conditions with greater accuracy.
For example, their AVISE Lupus test combines traditional antibody tests with their proprietary Cell-Bound Complement Activation Products (CB-CAPs) technology to provide more accurate lupus diagnosis. This specialized testing is why the billing might look different from your regular lab work.
When to Contact Billing vs. Customer Service
Sometimes it’s confusing to know who to contact about what. Here’s a quick guide:
Contact Billing (888-452-1522) for:
- Questions about charges
- Setting up payment plans
- Insurance coverage issues
- Statements and receipts
Contact Customer Service (also 888-452-1522, but different department) for:
- Questions about the tests themselves
- Help understanding test results
- Finding a draw site
- Ordering supplies for collection
The Bottom Line on Paying Your Exagen Bill
Paying medical bills is never fun, but Exagen has made it relatively straightforward with multiple options to fit different preferences. My recommendation is to:
- First check your insurance coverage and explanation of benefits
- Choose the payment method that works best for you (MyLabBill, Doxo, or direct website)
- If you can’t pay the full amount, call them right away to discuss options
- Keep records of all payments and communications
Don’t let the bill stress you out more than the medical condition itself! Exagen’s team understands that these tests are important for your health, and they’re generally willing to work with patients on payment solutions.
Final Thoughts
If you’ve found other helpful ways to manage Exagen billing or have tips to share, I’d love to hear them! We’re all in this together, navigating the complex worlds of autoimmune health and medical billing.

Building the Foundation for a Diagnosis
AVISE CTD is a comprehensive offering that enables clinicians to more effectively diagnose complex autoimmune conditions such as lupus, rheumatoid arthritis and Sjogrens disease earlier and with greater accuracy.
AVISE CTD delivers comprehensive, actionable results
With over 30 biomarkers carefully selected by rheumatologists for their clinical and diagnostic relevance, AVISE CTD helps improve diagnostic accuracy, reducing uncertainty and aiding in earlier diagnosis. This profile achieves 80% sensitivity and 86% specificity for systemic lupus erythematosus (SLE) by leveraging 10 biomarkers and a validated algorithm.These 3 novel biomarkers (TC4d, TIgG and TIgM) enhance the sensitivity for SLE and complement AVISE Lupus. This updated profile combines 3 new biomarkers (anti-RA33 IgA/IgG/IgM) to confidently identify patients with rheumatoid arthritis (RA) and substantiate a seronegative RA diagnosis.This profile utilizes anti-SSA antibodies (anti-Ro52 and anti-Ro60) and anti-SSB/La to improve the diagnostic resolution for Sjögren’s disease.The incorporation of anti-RNP70 and anti-U1RNP into this profile results in a highly specific test for mixed connective tissue disease (MCTD).This profile supports SLE diagnosis and confirms antiphospholipid syndrome (APS) autoantibody presence with biomarkers in the APS diagnostic criteria.This profile consists of 3 of the most sensitive biomarkers (anti-Centromere, anti-Scl70, and anti-RNA Pol III) for limited and diffuse systemic sclerosis.The anti-Jo1 antibody associated with antisynthetase syndrome is included in this profile to enhance the differentiation of forms of myositis associated with other CTDs, such as lupus.Thyroid peroxidase and thyroglobulin antibodies incorporated into this profile identify patients with comorbid or primary autoimmune thyroid disease.
Developed in partnership with rheumatologists, the AVISE CTD report provides a comprehensive lineup of profiles, revealing the most salient information in the most intuitive and clinically actionable manner.
Exagen is a leading autoimmune diagnostics company with extensive peer reviewed literature supporting the clinical utility of its proprietary technology, demonstrating actional results that support treatment decisions.
References:
- Erythrocyte-bound C4d in combination with complement and autoantibody status for the monitoring of SLE.
- Cell-bound complement activation products in SLE. Ramsey-Goldman R, et al. Lupus Science and Medicine. 2017.
- Cell-bound complement activation products in systemic lupus erythematosus: comparison with anti-double-stranded DNA and standard complement measurements. Putterman C. et al. Lupus Science and Medicine. 2014.
- Systemic lupus erythematosus and primary fibromyalgia can be distinguished by testing for cell-bound complement activation products. Wallace D. et al. Lupus Science & Medicine. 2016.
- The AVISE Lupus Test and Cell-bound Complement Activation Products Aid the Diagnosis of Systemic Lupus Erythematosus. Mossell J. et al. The Open Rheumatology Journal. 2016.