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We're Located in 3 Locations Last Name Email Phone Type your message here... Submit Thanks for submitting! A member of our team will respond to your inquiry as soon as possible. 2 PIDGEON HILL DR. SUITE 150 STERLING, VA 20165 44355 PREMIER PLAZA SUITE 240 ASHBURN, VA 20147 8318 ARLINGTON BLVD SUITE 103 FAIRFAX, VA 22031

Are you Available for Walk-Ins or Do I Need to Schedule an Appointment? You are not required to schedule an appointment at our facility. We are available for walk-ins during the weekdays during our standard operating hours. However, we do recommend patients schedule appointments ahead of time, contact us via our email form, or call in advance to verify the availability of a Phlebotomist (if bloodwork is required). How Long Does it Take to Receive my Lab Results? The turnaround time of a test varies depending on the test(s) being administered. Typically, a test will take around 2-5 days. We recommend contacting us ahead of time for more details based on the specific test being administered. I received my results but I'm having trouble opening them Results sent directly to your email will typically be password protected for your security. Passwords will be the Date of Birth of the patient in the following order: (Year/Month/Day). For example, if you're Date of Birth is January 31, 1980 your password will be the following: [1980/01/31] How Will My Results be Delivered? If you provided a doctor's order/referral your results will be sent over directly to your referring physician. You can contact your physician directly for the results of your test (if they did not already contact you). If an order was not provided, you will receive your results via email. Your results will be delivered as a password protected PDF file. How Long Does it Take to Receive COVID test results? The standard turnaround time for PCR-COVID test results is 24 hours. What types of tests do you offer? We offer a wide variety of medical tests including, but not limited to, H.Pylori, Drug screenings, STD testing, COVID, FLU, standard blood panels, and far more. Please contact us for more information. Are Children Permitted to Take a COVID test? Yes, children can take the PCR-Covid test. The cost of the test is the same for children. Are there other options besides a Nasal Swab for the PCR-COVID test? The most effective method of testing for the COVID-19 Coronavirus is via a Nasopharyngeal swab. A cheek or throat swab can also be performed at the request of a physician; however, either of these methods can be inaccurate and may result in an inconclusive lab result. What is the Difference Between a Rapid Test and a PCR test? The Rapid test (also known as the Antigen test) offers a fast turnaround time but is best used on patients showing symptoms. However, the rapid test results tend to be inaccurate when compared to the RT-PCR test. One can expect the results of a Rapid Test within 15 minutes. The RT-PCR (Polymerase Chain Reaction) test is considered the “Golden Standard” with regards to COVID tests. The PCR test is considered the more accurate version when testing for the COVID-19 virus. Do I Need to Pick Up my Results in Person? While you may pick up results in person, the delivered lab results will be sent to your physician directly either through their portal or via fax. If an order was not provided, results will be sent to the email address provided when you schedule an appointment. How do I Access my lab Results? If you came with a doctor’s order, Clinical Diagnostic Laboratories (CDL) will fax your lab results to your doctor’s office. We will also try to email results in a timely manner. However, if you do not receive your results after the given time frame, please follow up with CDL by emailing us at info@clinicaldiagnosticlab.com or call us at 703-430-1111. The email will be from labreport@clinicaldiagnosticlab.com*. Your date of birth in the format ‘YYYYMMDD’ is your password to be used to open this report. *Note: Always check your spam/junk mail if you have not received your results in your standard inbox! **The easiest method of finding your results is to type the email address “labreport@clinicaldiagnosticlab.com” in your email’s search bar as results are often difficult to find when sent to the spam/junk folder.

Thyroglobulin Antibody Ordering Recommendation Not recommended in the initial evaluation of autoimmune thyroid disease. Most often used to evaluate potentially unreliable thyroglobulin measurements in thyroid carcinomas. Mnemonic ATHYG Performed Mon-Sat Methodology Quantitative Chemiluminescent Immunoassay Reported Within 24 hours New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Collect: Serum separator tube. Specimen Preparation: Transfer 0.5 mL serum to a Standard Transport Tube. (Min: 0.3 mL) Also acceptable: Heparinized plasma. Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: EDTA plasma. Grossly hemolyzed or lipemic specimens. Remarks: Stability: After separation from cells: Ambient: 8 hours; Refrigerated: 1 week; Frozen: 6 months Reference Interval 0.0 - 4.0 IU/mL Interpretive Data A value of 4.0 IU/mL or less indicates a negative result for thyroglobulin antibodies. The Thyroglobulin Antibody assay is being performed using the Beckman Coulter Access Dxl method. Compliance Category: FDA Note CPT Code 86800 Components Component Chart Name Thyroglobulin Antibody Component Test Code 0050105 LOINC 8098-6 Aliases ANTI-THYROGLOBULIN ANTIBODY THYROGLOBULIN ANTIBODY

Rheumatoid Factor (RF) Ordering Recommendation Aids in the workup of suspected rheumatoid arthritis or undifferentiated inflammatory arthritides. Consider ordering this test in conjunction with Cyclic Citrullinated Peptide (CCP) Antibody, IgG (0055256 ) to increase specificity and sensitivity. Rheumatoid Arthritis Panel (3004055 ) is the preferred test. Mnemonic Methodology Quantitative Immunoturbidimetry Performed Mon-Sat Reported Within 24 hours New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Fasting specimen preferred. Collect: Serum separator tube or plasma separator tube. Also acceptable: Green (lithium heparin), lavender or pink. Specimen Preparation: Allow the specimen to clot completely at room temperature. Transfer 0.5 mL serum or plasma to a Standard Transport Tube. (Min: 0.5 mL) Storage/Transport Temperature: Refrigerated Unacceptable Conditions: Plasma or other body fluids. Contaminated, hemolyzed, grossly icteric, or grossly lipemic specimens. Remarks: Stability: After separation from cells: Ambient: 24 hours; Refrigerated: 8 days; Frozen: 3 months (should not be thawed more than once) Reference Interval 0-14 IU/mL Interpretive Data Note CPT Code 86431 Components Component Chart Name Rheumatoid Factor Component Test Code 0050465 LOINC 11572-5 Aliases RA RF Rheumatoid Arthritis Factor

Serine Proteinase 3 (PR3) Antibody Ordering Recommendation When used in conjunction with other autoantibody tests (ANCA, MPO), may aid in differentiating suspected Wegener granulomatosis (WG) from other vasculitides. May be useful to monitor patients with PR3 antibodies. ​ Panel tests are available. For the workup of suspected vasculitis, refer to ANCA-Associated Vasculitis Profile (ANCA/MPO/PR3) (3003745 ). For patients with a history of vasculitis, refer to Myeloperoxidase (MPO) Antibody and Serine Proteinase 3 (PR3) Antibody with Reflex to Anti-Neutrophil Cytoplasmic Antibody, IgG by IFA (3003746 ). ​ Mnemonic PR3 Performed Mon-Sat Methodology Semi-Quantitative Multiplex Bead Assay Reported 1-2 Days New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Collect: Serum separator tube. Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to a Standard Transport Tube. (Min: 0.2 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Plasma, urine, or other body fluids. Contaminated, hemolyzed, or severely lipemic specimens., icteric, or lipemic specimens. Remarks: Stability: After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) Reference Interval 19 AU/mL or less Negative 20-25 AU/mL 26 AU/mL or greater Equivocal Positive Interpretive Data Approximately 85% of patients with a C-ANCA pattern by IFA have antibodies specific for PR3. Compliance Category: FDA Note CPT Code 83516 Components Component Chart Name Serine Proteinase 3 (PR3) Ab, IgG Component Test Code 0050527 LOINC 6968-2 Aliases PR3 PR3 Ab PR3 IgG Antibodies

Allergens, Food, Common Adult Food IgE Ordering Recommendation Mnemonic FOOD ADULT Performed Sat-Sun Methodology Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay Reported 1-3 Days New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Multiple patient encounters should be avoided. Collect: Serum separator tube. Multiple specimen tubes should be avoided. Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 2.25 mL serum to a Standard Transport Tube. (Min: 1.04 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Hemolyzed, icteric, or lipemic specimens. Remarks: Stability: After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year Reference Interval Test Number Components Reference Interval Immunoglobulin E Age Reference Interval (kU/L) 0-5 months 13 or less 6-12 months 34 or less 1-2 years 97 or less 3 years 199 or less 4-6 years 307 or less 7-8 years 403 or less 9-12 years 696 or less 13-15 years 629 or less 16-17 years 537 or less 18 years and older 214 or less Less than or equal to 0.34 kU/L Less than or equal to 0.34 kU/L Allergen, Food, Egg White IgE Allergen, Food, Milk (Cow) IgE Less than or equal to 0.34 kU/L Less than or equal to 0.34 kU/L Less than or equal to 0.34 kU/L Less than or equal to 0.34 kU/L Allergen, Food, Peanut IgE Allergen, Food, Shrimp IgE Allergen, Food, Soybean IgE Allergen, Food, Wheat IgE Less than or equal to 0.34 kU/L Less than or equal to 0.34 kU/L Allergen, Food, Codfish IgE Allergen, Food, Corn IgE Less than or equal to 0.34 kU/L Less than or equal to 0.34 kU/L Allergen, Food, Walnut (Juglans spp) IgE Allergen, Food, Clam IgE Less than or equal to 0.34 kU/L Allergen, Food, Scallop IgE Reference Interval Allergen results of 0.10-0.34 kU/L are intended for specialist use as the clinical relevance is undetermined. Even though increasing ranges are reflective of increasing concentrations of allergen-specific IgE, these concentrations may not correlate with the degree of clinical response or skin testing results when challenged with a specific allergen. The correlation of allergy laboratory results with clinical history and in vivo reactivity to specific allergens is essential. A negative test may not rule out clinical allergy or even anaphylaxis. Reporting Range (reported in kU) Class Scoring Probability of IgE Mediated Clinical Reactionported in kU) Less than 0.10 No significant level detected 0 0.10-0.34 Clinical relevance undetermined 0/1 0.35-0.70 Low 1 0.71-3.50 3.51-17.50 Moderate High 2 3 17.51-50.00 Very High 4 50.01-100.00 Very High 5 Greater than 100.00 Very High 6 Compliance Category: FDA Note Allergens included in this panel: Clam, Egg White, Codfish/Whitefish, Corn, Milk (Cow's), Peanut, Shrimp, Scallop, Soybean, Walnut, Wheat, and IgE Serum Total CPT Code 86003 x11; 82785 Components Component Test Code Component Chart Name LOINC 19113-0 Allergen, Food, Egg White IgE Allergen, Food, Peanut IgE Allergen, Food, Shrimp IgE Allergen, Food, Milk (Cow) IgE 6106-9 7258-7 6206-7 6246-3 Immunoglobulin E 0050345 0055013 0055020 0055024 0055030 Allergen, Food, Soybean IgE Allergen, Food, Wheat IgE 6248-9 6276-0 0055031 0055034 Allergen, Food, Codfish IgE Allergen, Interp, Immunocap Score IgE 6082-2 33536-4 0055036 0055041 Allergen, Food, Corn IgE Allergen, Food, Walnut (Juglans spp) IgE 6087-1 33536-4 0055078 0055209 Allergen, Food, Clam IgE Allergen, Food, Scallop IgE 6076-4 7691-9 0099488 0099495

Beta-2 Glycoprotein 1 Antibodies, IgG and IgM Ordering Recommendation Acceptable initial test when antiphospholipid syndrome (APS) is strongly suspected. Order with Lupus Anticoagulant Reflexive Panel (0030181 ) and Cardiolipin Antibodies, IgG and IgM (0099344 ). May also be useful in estimating risk of thrombosis and/or pregnancy-related morbidity in patients with systemic lupus erythematosus (SLE). Mnemonic B2GPI PAN Performed Mon-Sat Methodology Semi-Quantitative Enzyme-Linked Immunosorbent Assay Reported 1-2 days New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Collect: Serum separator tube. Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. (Min: 0.3 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Plasma or other body fluids. Contaminated, hemolyzed, grossly icteric, or severely lipemic specimens. Remarks: Stability: After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) Reference Interval Reference Interval Components <=20 SGU B2Glycoprotein 1, IgG Antibody <=20 SMU B2Glycoprotein 1, IgM Antibody Interpretive Data The persistent presence of IgG and/or IgM beta 2 glycoprotein I (B2GPI) antibodies is a laboratory criterion for the diagnosis of antiphospholipid syndrome (APS). Persistence is defined as moderate or high levels of IgG and/or IgM B2GPI antibodies detected in two or more specimens drawn at least 12 weeks apart (J Throm Haemost. 2006;4:295-306). B2GPI results greater than 20 SGU (IgG) and/or SMU (IgM) are considered positive based on the cutoff values established for this test. International reference materials and consensus units for anti-B2GPI antibodies have not been established (Clin Chim Acta. 2012;413(1-2):358-60; Arthritis Rheum. 2012;64(1):1-10.); results can be variable between different commercial immunoassays and cannot be compared. Strong clinical correlation is recommended for a diagnosis of APS. Low positive IgG and IgM B2GPI antibody levels should be interpreted in light of APS-specific clinical manifestations and/or other criteria phospholipid antibody tests. Compliance Category: FDA Note MPL = IgM phospholipid units CPT Code 86146 x2 Components Component Chart Name B2Glycoprotein 1, IgG Antibody Component Test Code 0050322 LOINC 44448-9 0050323 B2Glycoprotein 1, IgM Antibody 44449-7 Aliases Anti-B2-Glycoprotein 1 Anti-B2-Glycoprotein I Anti-B2-GP 1 Anti-B2-GP1 Anti-B2-GPI Anti-beta-2 glycoprotein 1 Anti-beta-2 glycoprotein I Apolipoprotein H Apolipoprotein H, APOH B2 Glycoprotein 1 antibodies B2GP Antibodies B2GP1 B2GPI IgG, IgM BECKY Beta 2 GP1 Ab IgG Beta 2 GP1 Ab IgM Beta 2GP1 Ab Beta 2Glycoprotein 1

Cardiolipin Antibody, IgM Ordering Recommendation Acceptable initial test when antiphospholipid syndrome (APS) is highly suspected. Order with Lupus Anticoagulant Reflexive Panel (0030181 ) and Beta-2 Glycoprotein 1 Antibodies, IgG and IgM (0050321 ). Cardiolipin Antibodies, IgG and IgM (0099344 ) is preferred. Mnemonic AC-IGM Performed Mon-Sat Methodology Semi-Quantitative Enzyme-Linked Immunosorbent Assay Reported 1-2 days New York DOH Approval Status This test is New York DOH approved. Specimen Required Patient Preparation: Collect: Serum separator tube. Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to a Standard Transport Tube. (Min: 0.3 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Plasma or other body fluids. Contaminated, heat-inactivated, hemolyzed, or lipemic specimens. Remarks: Stability: After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year Reference Interval <=12 MPL Negative 13-19 MPL Indeterminate 20-80 MPL Low to Moderately Positive 81 MPL or above High Positive Interpretive Data The persistent presence of IgG and/or IgM cardiolipin (CL) antibodies in moderate or high levels (greater than 40 GPL and/or greater than 40 MPL units) is a laboratory criterion for the diagnosis of antiphospholipid syndrome (APS). Persistence is defined as moderate or high levels of IgG and/or IgM CL antibodies detected in two or more specimens drawn at least 12 weeks apart (J Throm Haemost. 2006;4:295-306). Lower positive levels of IgG and/or IgM CL antibodies (above cutoff but less than 40 GPL and/or less than 40 MPL units) may occur in patients with the clinical symptoms of APS; therefore, the actual significance of these levels is undefined. Results should not be used alone for diagnosis and must be interpreted in light of APS-specific clinical manifestations and/or other criteria phospholipid antibody tests. Compliance Category: FDA Note MPL = IgM phospholipid units CPT Code 86147 Components Component Chart Name Cardiolipin Antibody IgM Component Test Code 0050902 LOINC 3182-3 Aliases ACA aCL aCL Antibody aCL IgG Anti-Cardiolipin Anticardiolipin Anticardiolipin Antibodies Cardiolip

Allergen, Food, Whole Egg, IgG Ordering Recommendation Not recommended for initial thyroid disorders testing. Distinguish thyroid autoimmune disorders from nonautoimmune disease or hypothyroidism. Mnemonic EGGWHOLE Methodology Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay Performed Mon-Sat Reported 1-8 days 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. Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Hemolyzed, icteric, or lipemic specimens. Remarks: Stability: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year Reference Interval Less than 30.21 mcg/mL Interpretive Data Values less than 2.00 mcg/mL represent absent or undetectable levels of allergen-specific IgG antibody. This test has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes. Compliance Category: FDA Note CPT Code 86001 Components Component Chart Name Allergen, Food, Whole Egg IgG Component Test Code 2011820 LOINC 45201-1 Aliases

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