About Provider
Li Castillo is a credentialed healthcare professional and clinical educator with over a decade of dedicated experience in clinical medicine, laboratory operations, and patient centered care. He holds professional credentials as a Certified Medical Assistant (NCMA), Certified Phlebotomy Technician (NCPT), and Certified Phlebotomy Instructor and others. As the founder and lead clinician at At Your Door Lab, Li provides high-precision mobile phlebotomy services directly to patients, senior living communities, and healthcare organizations across Fredericksburg and Northern Virginia. His broad clinical background spans routine and STAT blood draws, specialty lab kit collections, pediatric and geriatric phlebotomy, and secure specimen transport maintained under strict chain-of-custody protocols. Complementing his field experience, Li serves as a phlebotomy instructor, training future healthcare professionals in advanced venipuncture techniques, safety compliance, HIPAA privacy standards, and OSHA bloodborne pathogen guidelines. Fluent in both English and Spanish, he is dedicated to delivering accessible, reliable, and compassionate care ensuring every specimen collection is performed with outstanding clinical excellence and patient comfort.
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Quick Profile Summary
What to expect when you book
Test kits collected
Works with any at-home test kit. Every kit ships with its own instructions, and At Your Door Lab LLC follows the ones in your box.
Qualifications
10 years of experience
Service Area
Primary: Fredericksburg, VA
Services & Fee Breakdown
Starting out-of-pocket prices. Confirm the final price directly with your provider.
Payment & Insurance
The mobile visit fee is paid out-of-pocket — it is typically not covered by insurance. Lab processing itself may be billed to your insurance by the laboratory (Quest, Labcorp). Payment options this provider lists — always confirm directly before your visit:
Frequently asked questions
Does At Your Door Lab LLC offer mobile blood draws in Fredericksburg?↓
Yes. At Your Door Lab LLC is a mobile phlebotomy provider serving Fredericksburg, plus Stafford, VA, King George, VA, Spotsylvania, VA, Woodbridge, VA, Tappahannock, VA, Alexandria, VA, Lorton, VA, Ruther Glen, VA. They travel to your home or workplace to collect your sample.
How much does an at-home blood draw cost with At Your Door Lab LLC?↓
At Your Door Lab LLC's at-home draw starts at $100. Final pricing depends on your specific test, so confirm when you book.
What payment options does At Your Door Lab LLC list?↓
At Your Door Lab LLC lists: Out-of-pocket (Cash/Card). No insurance plans are listed — ask when you schedule if that has changed.
What services does At Your Door Lab LLC offer?↓
At Your Door Lab LLC offers At-Home Blood Draw, Specialty Kit Collection (Everlywell, Rupa, etc.), Specimen Pickup, Geriatric / Senior Care, Pediatric Collection, Corporate Wellness Staffing, Hospital Lab Partner, Therapeutic Phlebotomy, Insurance Exam Blood Draws, TB Blood Test (IGRA). Let them know what your order calls for when you book.
Can At Your Door Lab LLC draw blood for my at-home test kit?↓
Yes — At Your Door Lab LLC works with any at-home test kit. Every kit arrives with its own instructions, and those are the ones followed on the visit. Bring the whole box, unopened, including the return packaging.
How does booking a mobile blood draw with At Your Door Lab LLC work?↓
Request a booking with your preferred date and time, At Your Door Lab LLC confirms and travels to you to collect your sample, and your sample is delivered to the lab per your order.
How PhlebFlow Works
1. Request online
Pick the date and time that work for you.
2. Your phlebotomist comes to you
Professional care at home — no waiting rooms.
3. Samples delivered to the lab
Your draw is delivered to the lab your order specifies.
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