Infectious and autoimmune diseases present unique diagnostic challenges—overlapping symptoms, nonspecific presentations, and the need for specialized expertise. Quest provides a comprehensive portfolio of screening panels designed to bring clarity to complexity, helping clinicians reach accurate diagnoses faster and with greater confidence.
Tuberculosis blood testing offers superior accuracy and convenience compared to traditional skin testing. Quest offers both T-SPOT®.TB and QuantiFERON®-TB Gold Plus tests—delivering objective results from a single patient visit.
ANAlyzeR™ ANA IFA with Reflex Titer/Pattern is the gold standard immunofluorescence assay (IFA) technology to evaluate 25 analytes from a single blood sample, streamlining diagnosis for 8 of the most common autoimmune conditions.
Access a comprehensive menu of autoimmune panels that incorporate reflex testing to expedite diagnostic assessment without the need for additional visits and follow-up orders, helping contain costs and speed time to diagnosis.
ANA screens with reflexes – Cost-effective screening for common autoimmune diseases with automatic tiered testing
ANAlyzeR™ panel – Fixed panel of 25 analytes providing full-picture view for differential diagnosis
Rheumatoid arthritis panels – Early diagnosis combining MCV antibody, RF, and CCP antibody
Systemic sclerosis panels – 12-antibody assessment for scleroderma diagnosis
Extended myositis panels – 13-antibody panel including HMGCR and cN-1A for comprehensive myositis evaluation
Prebiologic panels – Guideline-recommended tests before initiating biologic/biosimilar therapy
TNF blocker monitoring – Drug level and antidrug antibody testing for adalimumab and infliximab
Disease-specific markers – Ongoing monitoring for disease activity and treatment response
Interstitial lung disease – Specialized antibody panels
Autoimmune liver disease – Comprehensive hepatic autoantibody profiles
Neurologic autoimmune – Testing for autoimmune encephalitis and neuropathies
Celiac disease – Complete serologic evaluation
Our quantitative and qualitative assays help physicians not only screen for and identify pathogens but help in assessing treatment response and drug resistance and in planning appropriate care.
T-SPOT®.TB test – ELISPOT-based IGRA with high sensitivity
QuantiFERON®-TB Gold Plus – 4th generation IGRA with CD4+ and CD8+ response
Tuberculin skin test (TST) – Traditional screening when preferred
Specimen stability – Extended processing windows up to 54 hours
Hepatitis B Triple Screen – CDC-recommended universal screening panel
Hepatitis C screening – HCV antibody with reflex to NAAT for RNA detection
Treatment monitoring – Viral load quantification and genotyping
Hepatitis A & E testing – Serologic markers for acute infection
4th Generation Ag/Ab testing – Early detection during pre-seroconversion window
HIV-1/2 with reflexes – CDC algorithm-compliant testing cascade
Viral load monitoring – Quantitative RNA for treatment response
Resistance testing – Genotypic analysis for treatment selection
PrEP support testing – Monitoring for pre-exposure prophylaxis programs
Lyme disease testing – Antibody screening with confirmatory Western blot
Tick-borne panel – Multipathogen detection including Lyme, anaplasmosis, ehrlichiosis, babesiosis
STI panels – Comprehensive screening for sexually transmitted infections
Respiratory pathogens – Molecular testing for viral and bacterial infections
Zika virus – Screening for endemic area exposure
Malaria – Diagnostic testing for returning travelers
H pylori – Serology and stool antigen testing
Tap into extensive infectious disease and autoimmune testing from a single best-in-class diagnostic service.
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