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This is the home page to access the Patient Portal. The patient portal allows previous and returning patients the ability to access their lab results. Your Health, One Click Away View Your Lab Results anytime, anywhere—fast, secure, and easy to use I don't have a portal set up yet and need access I have a portal setup and I'm logging in Your Lab Results, All in One Place Our new Patient Portal gives you instant access to your laboratory test results. Whether you're tracking progress, reviewing past reports, or preparing for your next visit, everything you need is now at your fingertips. Safe, secure, and always available. Sign Up for Portal Access Why Use the Patient Portal? Simple Access, Meaningful Insights 📊 Track your results over time for better health insight 🔐 Secure, private access to your lab data 📥 View current and past lab reports 🧾 Compare individual test results from different visits ✅ Set up in just a few minutes with your email How to Get Access Getting Started is Easy —Just Follow These Steps We’ll confirm your email and send you a secure sign-up link. You’ll create a password and verify your account. Log in anytime from the Patient Portal page to view your test results and trends. Contact Us to Get Started

Learn more about Clinical Diagnostic Laboratories, located in Ashburn and Sterling within the Loudoun County area. About Clinical Diagnostic Laboratories Our main goal is to provide an alternative testing facility for individuals: doctors, as well as hospitals that are affordable and convenient. What makes Clinical Diagnostics Laboratories different from the others? We provide excellent service with a personal and friendly touch. We have an on-call Director at the Lab who has a Ph.D. in Pathology. Our Full-time Technologist has over ten years of experience in the Medical Lab field. Clinical Diagnostic Laboratories has grown quickly throughout the area with respect to returning individuals, referrals, and walk-ins because we treat our patients with dignity and respect. Schedule An Appointment Commemorated as Local Heroes to the Community Throughout the years, Clinical Diagnostic Laboratories has worked extensively to provide testing and our services to organizations and government officials regularly to maintain a safe environment for everyone. During the peak of the COVID-19 Pandemic, Clinical Diagnostic Laboratories provided additional assistance to help guarantee the safety of the community. Due to their efforts, they were awarded by Fairfax County with the Community Hero Award. You can read more using the button below. Read More Here One of the Best at What We Do! We help medical facilities, individual patients, large companies, and organizations. Below are a few of the groups we’ve partnered with. View Our Capability Statement What Others Say About Us For over 5 years, our facility has continued to provide excellent, quality service to many patients. Here’s what they say about us and our laboratory. Leave a Review

The product page for the Immunochemical Test at Clinical Diagnostic Laboratories. InSure ONE - One Day Fecal Immunochemical Test *The Fecal Immunochemical kit, as well as a prepaid return envelope, will be shipped to you* A simple, non-invasive test that helps you screen for early signs of colon cancer — from the comfort of home. No doctor’s order, no insurance, no hassle. Colon cancer often develops silently, with no symptoms in the early stages. The InSure® ONE FIT test makes it easy to check for hidden blood in your stool, a key early indicator of colorectal disease, so you can take control of your health before problems become serious. This test is quick, clean, and designed for anyone who wants reliable screening without the stress of appointments, referrals, or long waits. A highly sensitive test that detects tiny, invisible traces of blood in your stool — something you can’t see on your own. Uses advanced antibody technology to identify blood from the lower colon. Does not require diet changes, fasting, or multiple stool samples. Helps identify early warning signs of colon cancer, polyps, or gastrointestinal bleeding. Even if you feel completely fine, FIT testing is one of the easiest and most effective ways to stay ahead of colorectal health issues. Why people choose the InSure® ONE FIT test: Simple at-home collection — no mess and no bathroom handling. Only one sample required — done in minutes. No dietary restrictions before completing the test. Great for routine screening or peace of mind between doctor visits. Fast, accurate processing by our CLIA-certified lab. Ideal for adults who prefer private, accessible screening without insurance barriers. Who is this test for? Perfect for individuals who want: A quick annual colorectal cancer screening A private, self-pay option without waiting for a doctor’s appointment Monitoring between colonoscopies (as advised by a physician) A simple way to stay proactive about their health $35.50 Taxes will be calculated at checkout Buy Now

Purchase a laboratory panel that will make staying healthy, easy. No insurance required. No doctor order needed. And the results are provided quickly. Explore Our Tests HPV Self-Collection Test $75.00 Screens for high-risk HPV types linked to cervical cancer* Helps detect infection before symptoms appear* Designed for women 25+, prioritizing routine cervical health No referral or insurance required — discreet and direct access Results delivered securely within 2–5 business days A proactive step in protecting long-term reproductive health* Buy Now *This panel is not intended to diagnose, treat, cure, or prevent any disease. Always consult a healthcare provider for clinical follow-up. Women's Health Panel This panel supports hormone, thyroid, and nutrient balance—ideal for women experiencing fatigue, mood changes, or irregular cycles. It’s a simple, proactive way to monitor your health and feel your best, with easy-to-read results delivered securely in just a few days. $263.50 Buy Now Diabetes and Heart Health Panel This panel checks your long-term blood sugar levels and key cholesterol markers to help assess your risk for diabetes and heart disease. $139.00 Buy Now Complete Food Allergy Scan This test screens for common food and environmental allergens to help identify potential triggers behind skin, breathing, or digestive issues. With just a simple blood draw, you’ll gain clear insights to better manage allergies and improve your daily comfort. $155.00 Buy Now Complete STD Panel This panel tests for common STIs like chlamydia, gonorrhea, syphilis, and HIV using a quick blood sample collected at our lab—no swabs or mail-in kits required. It’s a confidential, hassle-free way to check your status for routine screenings, new relationships, or peace of mind. $285.00 Buy Now Women's Fertility Panel Our Women’s Fertility Panel offers a comprehensive look at the hormones and markers that influence reproductive health and ovulation. It’s ideal for those planning for pregnancy or wanting clarity about their cycle—no doctor’s order or insurance needed. To learn more, contact us using the button below. Contact Us Complete Respiratory Allergy Scan This test screens for common environmental allergens like pollen, pet dander, mold, and dust mites that may cause sneezing, congestion, or asthma-like symptoms. It’s performed with a simple blood draw and helps you identify triggers so you can breathe easier year-round. $288.00 Buy Now Men's General Health Panel This panel evaluates testosterone, cholesterol, blood sugar, and key nutrients like Vitamin D and B12 to give a clear picture of men’s energy, mood, heart health, and overall wellness. It's an easy, comprehensive way to stay on top of your health and performance. $241.00 Buy Now Cholesterol Test This comprehensive cholesterol test measures key heart health markers including HDL, LDL, triglycerides, total cholesterol, and Lipoprotein(a). It helps assess your risk for heart disease and provides a clear snapshot of your overall cardiovascular health. $95.00 Buy Now Men's Fertility Panel This panel includes a semen analysis to evaluate sperm count, movement, and overall quality—key factors that impact male fertility. It’s a simple, private test performed at our lab to help you take the first step in understanding your fertility status $85.00 Buy Now One-Day Fecal Immunochemical Test The InSure® ONE Fecal Immunochemical Test (FIT) is a simple, at-home screening that checks for hidden blood in your stool — an early warning sign of colon cancer or polyps. This one-day test makes it easy to stay proactive about your colorectal health. The kit can be mailed to you and a prepaid return envelope will be included. $35.50 Buy Now Frequently asked questions Online Tests - FAQs Do I need to schedule an appointment if I purchase the test online? Yes — once you place your order, you'll be prompted to schedule an appointment at one of our laboratory locations. Walk-ins are not permitted for prepaid panels to ensure proper time is set aside for your visit. Will I receive a kit in the mail? No — there is no kit mailed to your home. All testing is performed in our certified laboratory. After purchasing your panel, you'll simply come in for your scheduled blood draw. Do I need to bring anything to my appointment? Just bring a valid photo ID and your email confirmation. There’s no insurance information needed — we’ve already got you in the system. Do I need a doctor’s referral to order a test? Not at all. Our panels are available without a referral, prescription, or insurance. That’s part of what makes this process simple and accessible. How will I receive my results? Results are delivered securely via email in PDF format within 2–5 business days. You’ll be notified as soon as they’re ready. Can I use my HSA or FSA card? Yes — many patients successfully use HSA/FSA cards at checkout. Be sure to check with your plan provider for eligibility. Can I get reimbursed by my insurance? Yes — depending on your insurance policy, you may be eligible for reimbursement by submitting your receipt directly to your provider. However, reimbursement is not guaranteed. Some insurance plans do not cover specific tests or may require additional documentation before testing. We strongly recommend contacting your insurance provider in advance to understand your options, if you wish to be reimbursed. Is there a cancellation fee? Yes — if you cancel your order after purchasing online, a small cancellation fee of 3.4% will be applied to cover non-refundable transaction processing costs.

Clinical Diagnostic Laboratories is an affordable and efficient medical laboratory located in Northern Virginia in Sterling, VA and in Ashburn, VA just minutes from One Loudoun. At our facility, we strive to provide the highest possible quality testing for doctors, companies and organizations, and for individual patients. The DMV's Most Trusted Lab for Fast, Accurate, and Reliable Testing–Every Time From routine panels to advanced diagnostics, we deliver results you can trust with speed you can count on. About Us Schedule An Appointment Pre-Built Panels Ashburn 44355 Premier Plaza Suite 230, Ashburn, VA 20165 Sterling 2 Pidgeon Hill Dr. Suite 150, Sterling, VA 20165 Fairfax 8318 Arlington Blvd Suite 103, Fairfax, VA 22031 Schedule An Appointment OUR CURRENT HOURS ARE: Monday 9am - 3pm Tuesday 9am - 3pm Wednesday 9am - 3pm Thursday 9am - 3pm Friday 9am - 3pm Saturday 9am - 3pm* Sunday: Closed* *Appointments are highly recommended on Monday-Saturdays and major Holidays are by appointment only Please contact us ahead of time to verify if walk-ins are available. Schedule An Appointment ABOUT CLINICAL DIAGNOSTIC LABORATORIES Preferred Diagnostic Center in Loudoun County Our main goal is to provide an alternative testing facility for individuals: doctors, as well as hospitals that is affordable and convenient. What makes Clinical Diagnostics Laboratories different from the others? We provide excellent service with a personal and friendly touch. We have an on-call Director at the Lab who has a Ph.D. in Pathology. Our Full-time Technologist has over ten years of experience in the Medical Lab field. Clinical Diagnostic Laboratories has grown quickly throughout the area with respect to returning individuals, referrals and walk-ins because we treat our patients with dignity and respect. About Us “Clinical Diagnostic Laboratories is recognized as the TOP Diagnostic Lab for the Northern Virginia, Washington, DC and Maryland regions and is featured on the TOP Doctors Interviews which are seen on CNN Headline News, MSNBC, Oprah Winfrey Network, BRAVO and other networks” Services We Provide Our laboratory provides services for a variety of organizations and companies across a wide array of industries. Whether you're a private organization, government contractor, medical facility, small to large company, or something else entirely, we have the resources to help you achieve your desired goals. Please inquire for more information. View All Services No Insurance Required - Try Our Pre-Built Panels Our pre-built lab panels offer a fast, affordable way to check in on your health—no insurance or doctor’s order required. Whether you're monitoring your wellness, checking vitamin levels, or screening for common conditions, we've bundled the most important tests into convenient packages. Simple pricing, quick results, and expert local service make it easy to take control of your health on your terms. Order a Health Panel We Accept Most Insurances At our Medical Laboratory, we accept most forms of insurance. We strive to make our services as accessible as possible, so nearly all forms of insurance are accepted. However due to the ever-changing nature of policies and individual insurance plans, we highly recommend that you check with your insurance provider prior to any appointment in order to make sure your coverage is up-to-date and covered at our facility. Let Us Come to You Our on-site services extend to Northern Virginia, Maryland, and Washington DC We care about our patients and understand that being home-bound or taking time out of your busy schedule can make diagnostic testing inconvenient, that is why Clinical Diagnostics Laboratories will come to you. Schedule An Appointment

Ordering information regarding a Lipid Panel test for Clinical Diagnostic Laboratories. Lipid Panel Ordering Recommendation Use to assess cardiovascular disease risk and guide therapy. Mnemonic Methodology Quantitative Enzymatic Assay Performed Mon-Sat Reported Within 24 hours New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Refer to individual components. Collect: Plasma separator tube or serum separator tube. Specimen Preparation: Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to a standard transport tube. (Min: 0.5 mL) Storage/Transport Temperature: Refrigerated Unacceptable Conditions: Body fluid (refer to Cholesterol, Fluid; Triglycerides, Fluid; and Chylomicron Screen, Body Fluid). Remarks: Stability: After separation from cells: Ambient: 24 hours; Refrigerated: 7 days; Frozen: 3 months Reference Interval Interpretive Data An HDL cholesterol less than 40 mg/dL is low and constitutes a coronary heart disease risk factor. An HDL cholesterol greater than 60 mg/dL is a negative risk factor for coronary heart disease. Non-HDL cholesterol is a secondary target of therapy in persons with high serum triglycerides (greater than 199 mg/dL). The goal for non-HDL cholesterol in persons with high triglycerides is 30 mg/dL higher than their LDL cholesterol goal. CHD Risk Factors +1 Men, 45 years and older +1 Women, 55 years and older or premature menopause without estrogen therapy +1 Family history of premature CHD +1 Current smoking +1 Hypertension +1 Diabetes mellitus +1 Low HDL cholesterol: 39 mg/dL or less -1 High HDL cholesterol: 60 mg/dL or greater Desirable Adult Values Higher Risk Borderline Total Cholestorol Triglycerides 199 mg/dL or less 149 mg/dL or less 200-239 mg/dL 150-199 mg/dL 240 mg/dL or greater 200-499 mg/dL HDL Cholestorol LDL Cholesterol (calculated) 40 mg/dL or greater 129 mg/dL or less (99 mg/dL or less if patient has CHD) 39 mg/dL or less 130-159 mg/dL 160 mg/dL or greater VLDL Cholesterol (calculated) 30 mg/dL or less Desirable Children & Adolescents Higher Risk Borderline Total Cholestorol 169 mg/dL or less 170-199 mg/dL Triglycerides 149 mg/dL or less 150-199 mg/dL HDL Cholestorol LDL Cholesterol (calculated) 40 mg/dL or greater 109 mg/dL or less 110-129 mg/dL VLDL Cholesterol (calculated) 30 mg/dL or less 200 mg/dL or greater 200-499 mg/dL 39 mg/dL or less 130 mg/dL or greater Note CPT Code 80061 Components Component Test Code 0020031 0020040 0020051 0020053 0020551 0020705 0020008 0020023 0020024 0020025 0020027 0020029 0020030 0020032 0020396 3004293 Component Chart Name Sodium, Serum or Plasma Potassium, Serum or Plasma Chloride, Serum or Plasma Carbon Dioxide, Serum or Plasma Alkaline Phosphatase Aspartate Aminotransferase Alanine Aminotransferase Urea Nitrogen, Serum or Plasma Glucose, Serum or Plasma Creatinine, Serum or Plasma Calcium, Serum or Plasma Protein Total, Serum/Plasma Albumin, Serum or Plasma Bilirubin, Total, Serum or Plasma Anion Gap UH EGFR LOINC 2951-2 2823-3 2075-0 2028-9 6768-6 1920-8 1742-6 3094-0 2345-7 2160-0 17861-6 2885-2 1751-7 1975-2 33037-3 Aliases ACPA Antibody Anti Citrulline Anti-CCP C12 Chem 12 Chemistry Panel Chemistry Screen CMP SMA 12 SMA 20 SMAC

Ordering information regarding a Tissue Transglutaminase (tTG) IgA test for Clinical Diagnostic Laboratories. Tissue Transglutaminase (tTG) IgA Ordering Recommendation Recommended single screening test for IgA-competent individuals with suspected celiac disease. (IgA testing recommended to identify IgA competence.). May aid in monitoring adherence to gluten-free diet in celiac disease-confirmed patients. Mnemonic Methodology Semi-Quantitative Enzyme-Linked Immunosorbent Assay Performed Mon-Sat Reported Within 24 Hours New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Collect: Serum separator tube (SST). Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to a Standard Transport Tube. (Min: 0.3 mL) Storage/Transport Temperature: Frozen. Unacceptable Conditions: Refrigerated. Remarks: Stability: After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid freeze/thaw cycles) Reference Interval 3 U/mL or less 4-10 U/mL Negative Weak Positive 11 U/mL or greater Positive Interpretive Data Presence of the tissue transglutaminase (tTG) IgA antibody is associated with glutensensitive enteropathies such as celiac disease and dermatitis herpetiformis. tTG IgA antibody concentrations greater than 40 U/mL usually correlate with results of duodenal biopsies consistent with a diagnosis of celiac disease. For antibody concentrations greater or equal to 4 U/mL but less than or equal to 40 U/mL, additional testing for endomysial (EMA) IgA concentrations may improve the positive predictive value for disease. Note Testing for tTG IgA antibodies is recommended as an initial screen to identify patients at risk for celiac disease, and in whom duodenal biopsy should be performed to confirm disease. Some patients may have positive tTG IgA but negative EMA IgA and/or deamidated gliadin peptide (DGP) IgA results, which may be associated with false positivity or may indicate early disease. Close clinical correlation with continued testing may be indicated in patients with a family history of or who are at increased risk for celiac disease. A positive serology but normal biopsy may also indicate a gluten-free diet (GFD) prior to testing, latent disease, or early enteropathy. Re-challenge with a gluten diet may be recommended if GFD had been initiated prior to subsequent testing. In the case of latent or early disease, HLA DQ2 and DQ8 testing may be necessary to determine risk for disease. For patients with a high degree of suspicion for celiac disease and who test negative for tTG, EMA and/or DGP IgA tests, selective IgA deficiency should be considered and testing for tTG, EMA and/or DGP IgG antibodies performed. If serology is negative and suspicion for celiac disease is strong, intestinal biopsy may be warranted. Biopsy is particularly important for patients with diarrhea, steatorrhea, weight loss, failure to thrive, or with inherited genetic deficiencies such Down or Turner syndrome. CPT Code 86364 Components Component Chart Name Tissue Transglutaminase (tTG) Ab, IgA Component Test Code 0097709 LOINC 46128-5 Aliases Human RBC tTG Native tTG TG2 IgA Tissue Transglutaminase Tissue Transglutaminase Ab IgA tTG IgA tTG, IGA

Ordering information regarding a T- Uptake test for Clinical Diagnostic Laboratories. T Uptake Ordering Recommendation The preferred alternative to this test is Thyroxine, Free (Free T4) Methodology Quantitative Electrochemiluminescent Immunoassay (ECLIA) Performed Mon-Sat Reported Within 24 hours New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Collect: Serum separator tube or green (lithium heparin). Also acceptable: lavender Specimen Preparation: Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Grossly hemolyzed specimens. Remarks: Stability: After separation of cells: Ambient: 8 days; Refrigerated: 2 weeks; Frozen: 2 years Reference Interval Components Available Separately Reference Interval Thyroxine, Total T4 0.8-1.3 TBI Interpretive Data Thyroxine, Free (Free T4) is the preferred test alternative for T Uptake and Free Thyroxine Index tests. Note CPT Code 84479 Components Component Test Code Component Chart Name LOINC 3005979 T Uptake 74795-6 Aliases T3 Uptake T4 uptake, S T4U, Serum TBC THBR Thyroid Binding Ratio Thyroxine-binding capacity Throxine Binding Index Triiodothyronine uptake, serum

Are you interested in scheduling an appointment for blood testing, COVID, FLU, Allergy testing, or some other medical test? Schedule an appointment with us here. SCHEDULE AN APPOINTMENT Clinical Diagnostic Laboratories is a leading medical laboratory providing a wide variety of tests and services, such as routine blood work, H. Pylori tests, STD testing, drug screening, allergy testing, COVID-19, Flu, and much more. Use our easy scheduling tool below to make an appointment. Also, be sure to check out our FAQs page to address any problems you might have. You may also email us or give us a phone call at (703) 430-1111 .

Services for Life Insurance Companies We Care About Your Applicants Clinical Diagnostics Laboratories cares about your applicants and their goal to acquire life insurance. We promise to provide your life insurance applicants with professional laboratory testing to assist in their application process that is done with dignity. We provide laboratory testing using state-of-the-art testing equipment. With the ability to gain results in 24hrs with easy scheduling options . Our highly skilled professionals are on standby to treat your applicants with the highest degree of care and efficiency. Click here today to get started. Contact Us