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The RPR Test with Reflex to Titer and Confirmatory Testing screens for syphilis by detecting non-treponemal antibodies. If reactive, results are automatically followed by a titer to measure antibody concentration and confirmatory treponemal testing for accuracy. Doctors use this test to diagnose active or past syphilis, monitor treatment, or screen at-risk patients. Results provide vital insight into infection status, disease stage, and overall sexual health.

The Myocardial Antibody Screen with Reflex to Titer test is a specialized diagnostic blood test designed to detect the presence of autoantibodies targeting myocardial (heart muscle) tissue. Autoimmune responses against the heart can contribute to inflammation, damage, and dysfunction of cardiac tissue, leading to conditions such as myocarditis and cardiomyopathy. This test serves as an essential tool in identifying immune-mediated cardiac disorders by screening for myocardial antibodies and, if positive, determining the antibody titer level. The titer measurement helps assess the severity of the immune response and aids in monitoring disease progression or response to treatment.

The Endomysial IgA Antibody Screen with Reflex to Titer Test measures IgA antibodies linked to celiac disease and gluten sensitivity. It supports evaluation of chronic diarrhea, abdominal pain, weight loss, or nutrient deficiencies tied to autoimmune activity. Reflex to titer enhances diagnostic clarity, providing valuable information about intestinal damage, immune health, and systemic conditions.

The RPR (Monitor) with Reflex to Titer Test screens for syphilis by detecting antibodies to Treponema pallidum. If positive, a reflex titer determines antibody concentration to assess disease activity and treatment response. Doctors order this test to diagnose syphilis, monitor therapy, or check reinfection. Results provide essential information for managing active infection, confirming treatment success, and guiding follow-up care.

The ANA Screen IFA with Reflex to Titer and Pattern Test detects antinuclear antibodies in blood to evaluate autoimmune activity. If positive, further testing identifies antibody concentration (titer) and fluorescence pattern, helping diagnose conditions like lupus, rheumatoid arthritis, or Sjögren’s syndrome. Doctors order this test to investigate symptoms such as joint pain, fatigue, rash, or swelling and to guide treatment for autoimmune and connective tissue disorders.

The Bartonella Species IgG IgM Antibodies with Reflex to Titer Test detects antibodies to Bartonella, the bacteria that cause cat scratch disease and other infections. IgM suggests recent infection, while IgG indicates past or ongoing exposure. If positive, titers confirm antibody levels. Doctors use this test to evaluate patients with fever, swollen lymph nodes, or suspected vector-borne illness, helping confirm diagnosis and guide treatment.

The ANCA Screen with MPO and PR3 with Reflex to ANCA Titer detects antineutrophil cytoplasmic antibodies linked to autoimmune vasculitis. By targeting myeloperoxidase (MPO) and proteinase 3 (PR3), this test helps evaluate conditions such as granulomatosis with polyangiitis or microscopic polyangiitis. It supports diagnosis, disease activity monitoring, and assessment of autoimmune inflammation.

The Mitochondrial Antibody with Reflex to Titer Test detects antimitochondrial antibodies (AMAs), most commonly linked to primary biliary cholangitis (PBC), an autoimmune liver disease. If antibodies are present, reflex titers measure their level for greater diagnostic detail. Doctors use this test to investigate unexplained liver abnormalities, chronic fatigue, or jaundice, helping confirm autoimmune liver disease and guide long-term management.

The ANCA Screen with Reflex to ANCA Titer detects antineutrophil cytoplasmic antibodies, often linked to autoimmune vasculitis such as granulomatosis with polyangiitis and microscopic polyangiitis. If the screen is positive, a titer is performed to measure antibody levels for greater diagnostic accuracy. Doctors use this test to evaluate unexplained inflammation, kidney or lung issues, and guide treatment decisions in autoimmune and systemic vasculitis care.

The Rabies Vaccine Response End Point Titer Test measures rabies virus–neutralizing antibodies to assess immune response after vaccination. By quantifying antibody levels, this test determines whether protective immunity has been achieved, guides decisions on booster doses, and monitors long-term vaccine effectiveness. It is especially valuable for individuals at occupational risk of rabies exposure.

The Antibody Screen RBC with Reflex to Identification detects unexpected antibodies in red blood cells that may cause transfusion reactions or pregnancy complications. If antibodies are found, reflex testing identifies their specificity. Doctors use this test to ensure safe blood transfusions, evaluate prenatal risks of hemolytic disease of the newborn, and guide compatibility testing, helping protect patients during transfusion and pregnancy care.

The Islet Cell Antibody Screen with Reflex to Titer detects autoantibodies directed against pancreatic islet cells, which play a key role in insulin production. The presence of islet cell antibodies suggests autoimmune destruction of beta cells, often associated with type 1 diabetes or latent autoimmune diabetes in adults (LADA). Reflex testing to titer quantifies antibody concentration for diagnostic confirmation.

The Striated Muscle Antibody Test with Reflex to Titer detects antibodies targeting striated muscle, often linked to autoimmune conditions and paraneoplastic syndromes. Elevated levels may indicate myasthenia gravis, thymoma, or other neuromuscular disorders. Reflex titers help assess antibody concentration, supporting diagnosis, monitoring disease activity, and guiding evaluation of immune-mediated muscle weakness.

The Varicella Titer Test is a blood test that measures antibodies to the varicella-zoster virus (VZV), which causes chickenpox and shingles. A positive result indicates past infection, while a negative suggests no exposure. This test is not considered reliable for confirming immunity from vaccination. Doctors use it to evaluate history of natural infection, meet school or work requirements, and provide documentation of varicella exposure status.

The TDAP Titer Panel measures antibodies to diphtheria, tetanus, and pertussis (whooping cough) to evaluate immunity. It includes diphtheria antitoxoid antibody, tetanus antitoxoid antibody, and Bordetella pertussis toxin antibody. Doctors order this test to check vaccine response, confirm protection, or identify waning immunity. Results provide essential guidance for vaccination updates, disease prevention, and long-term immune system monitoring.

The MMR Titer Test is a quantitative blood test that measures antibody levels to measles, mumps, and rubella. Results provide exact antibody values to confirm prior infection or response to vaccination. Low levels suggest lack of protection, while higher levels indicate adequate response. Doctors order this test for school, employment, or travel requirements and to guide revaccination decisions, ensuring accurate evaluation of immune status against these viral diseases.

The Ehrlichia chaffeensis IgG IgM Antibodies Test detects immune response to the bacterium responsible for human monocytic ehrlichiosis (HME). Measuring both IgM and IgG provides information on recent or past infection, helping identify acute illness or prior exposure. This blood test supports evaluation of tick-borne disease in patients with symptoms such as fever, fatigue, or cytopenias, guiding clinical assessment and patient management.

The Measles Titer Test measures IgG antibody levels to determine immunity from prior measles infection or vaccination. A positive result indicates protective immunity, while a negative result suggests susceptibility. Doctors order this test to confirm immune status for school, healthcare, travel, or employment requirements. It is also used to verify vaccination response, ensuring individuals are protected against measles and reducing outbreak risk.

The Diphtheria Titer Test measures antibody levels to evaluate immune protection against Corynebacterium diphtheriae, the bacterium that causes diphtheria. This test helps determine whether immunity is adequate following vaccination or exposure. By assessing diphtheria antibody titers, it provides insight into immune system response, vaccine effectiveness, and long-term protection against this serious infection.

 The Hepatitis B Titer Test Panel is a diagnostic panel that comprises three essential tests designed to assess immunity, infection status, and antibody levels for the Hepatitis B virus (HBV). The panel includes the following tests: Hepatitis B Core Antibody Total, Hepatitis B Surface Antibody Quantitative, and Hepatitis B Surface Antigen with Reflex Confirmation.

The Tetanus and Diphtheria Titer Test measures antibody levels to determine immunity from prior vaccination or exposure. Adequate titers indicate protective immunity, while low levels may suggest the need for a booster. Doctors order this test for healthcare workers, students, travelers, or those with uncertain vaccination history. It provides essential information for maintaining protection against these serious bacterial infections.

The Poliovirus 1 and 3 Titer Test measures neutralizing antibodies to poliovirus types 1 and 3 to evaluate immunity from vaccination or past infection. Doctors order this test to confirm protective immunity, assess response to polio vaccines, or check susceptibility in healthcare, laboratory, or travel settings. Results help determine if additional vaccination is needed and provide vital information for monitoring polio immunity and global disease prevention.