BORRELIA BURGDORFERI IGG/IGM ELISA TEST SYSTEM

K033083 · Trinity Biotech USA · LSR · Nov 26, 2003 · Microbiology

Device Facts

Record IDK033083
Device NameBORRELIA BURGDORFERI IGG/IGM ELISA TEST SYSTEM
ApplicantTrinity Biotech USA
Product CodeLSR · Microbiology
Decision DateNov 26, 2003
DecisionSESE
Submission TypeTraditional
Regulation21 CFR 866.3830
Device ClassClass 2

Indications for Use

The Trinity Biotech Captia™ Borrelia burgdorferi IgG/IgM ELISA kit is an Enzyme-Linked Immunosorbent Assay (ELISA) for the qualitative presumptive detection of total (IgG/IgM) antibodies to Borrelia burgdorferi in human serum. This ELISA should only be used for patients with signs and symptoms that are consistent with Lyme disease. Equivocal or positive results must be supplemented by testing with a standardized Western blot procedure. Positive supplemental results are supportive evidence of exposure to B. burgdorferi and can be used to support a clinical diagnosis of Lyme disease.

Device Story

ELISA kit for qualitative detection of total (IgG/IgM) antibodies to Borrelia burgdorferi in human serum; utilizes microassay plate coated with B. burgdorferi (strain B-31) antigen. Patient serum incubated in wells; antigen-specific antibodies bind to solid-phase antigen. After washing, goat anti-human IgG conjugated with horseradish peroxidase added; binds to antigen-antibody complexes. TMB substrate added; enzymatic reaction produces color proportional to antibody concentration. Reaction stopped with sulfuric acid; absorbance measured at 450 nm via spectrophotometer. Used in clinical laboratory settings by trained personnel. Results provide presumptive evidence of exposure; must be confirmed by standardized Western blot. Supports clinical diagnosis of Lyme disease when combined with patient history, signs, and symptoms.

Clinical Evidence

Performance evaluated using a CDC serum panel (n=47) and a clinical study of fresh patient sera (n=176). CDC panel results showed 71% agreement with clinical diagnosis. Clinical study compared device to BioWhittaker Lyme STAT; 1-step positive/equivocal results were 9.1% for Trinity vs 7.4% for predicate. Precision testing (n=810 determinations) showed inter-assay CVs generally <15% for most samples. Cross-reactivity testing performed against various conditions (lipemic, bilirubinemic, RPR+, RF+, EBV+, CMV+, RMS+, elevated ESR, CRP, dsDNA+).

Technological Characteristics

Enzyme-Linked Immunosorbent Assay (ELISA) utilizing purified B. burgdorferi antigen immobilized on solid-phase microtiter wells. Detection via enzyme-labeled anti-human IgG/IgM conjugate and substrate-induced colorimetric reaction. Photometric measurement of optical density. Manual or automated microplate reader required. No specific materials or connectivity standards provided.

Indications for Use

Indicated for qualitative presumptive detection of total (IgM/IgG) antibodies to Borrelia burgdorferi in human serum for patients with signs and symptoms consistent with Lyme disease. Equivocal or positive results require supplemental Western blot testing.

Regulatory Classification

Identification

Treponema pallidum treponemal test reagents are devices that consist of the antigens, antisera and all control reagents (standardized reagents with which test results are compared) which are derived from treponemal sources and that are used in the fluorescent treponemal antibody absorption test (FTA-ABS), the Treponema pallidum immobilization test (T.P.I.), and other treponemal tests used to identify antibodies to Treponema pallidum directly from infecting treponemal organisms in serum. The identification aids in the diagnosis of syphilis caused by bacteria belonging to the genus Treponema and provides epidemiological information on syphilis.

Predicate Devices

Submission Summary (Full Text)

{0} 510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION DECISION SUMMARY DEVICE ONLY TEMPLATE A. 510(k) Number: K033083 B. Analyte: Borrelia burgdorferi C. Type of Test: Enzyme-Linked Immunosorbent Assay D. Applicant: Trinity Biotech USA E. Proprietary and Established Names: Trinity Biotech Captia Borrelia burgdorferi IgG/IgM Enzyme-Linked Immunosorbent Assay F. Regulatory Information: 1. Regulation section: 866.3830 2. Classification: Class II 3. Product Code: LSR 4. Panel: 83 G. Intended Use: 1. Intended use(s): The Trinity Biotech Captia Borrelia burgdorferi (B. burgdorferi) IgG/IgM Enzyme-Linked Immunosorbent Assay (ELISA) is intended for the qualitative presumptive (first-step) detection of total (IgG/IgM) antibodies to Borrelia burgdorferi in human serum. This ELISA should only be used for patients with signs and symptoms that are consistent with Lyme disease. Equivocal or positive results must be supplemented by testing with a standardized Western-blot (second-step) procedure. Positive supplemental (second-step) results are supportive evidence of exposure to B. burgdorferi and can be used to support a clinical diagnosis of Lyme disease. The diagnosis of Lyme disease must be made based on history, signs (such as erythema migrans), symptoms, and other laboratory data, in addition to the presence of antibodies to B. burgdorferi. Negative results (either first- or second step) should not be used to exclude Lyme disease. {1} Page 2 of 4 2. **Indication(s) for use:** The *Borrelia burgdorferi* IgG/IgM ELISA kit is an Enzyme-Linked Immunosorbent Assay (ELISA) for the qualitative presumptive detection of total (IgM/IgG) antibodies to *Borrelia burgdorferi* in human serum. This ELISA should only be used for patients with signs and symptoms that are consistent with Lyme disease. Equivocal or positive results must be supplemented by testing with a standardized Western blot procedure. Positive supplemental results are supportive evidence of exposure to *B. burgdorferi* and can be used to support a clinical diagnosis of Lyme disease. 3. **Special condition for use statement(s):** Not applicable 4. **Special instrument Requirements:** Single or dual wavelength microplate reader with 450 nm filter ## H. Device Description: This is an ELISA kit that contains *B. burgdorferi* (strain B-31 passed less than 15 times, washed, concentrated and detergent treated in glycine buffer) antigen coated microassay plate in a 96 well configuration, serum diluent, cutoff calibrator, a high positive, low positive, and negative control, horseradish-peroxidase conjugate, Chromogen/substrate solution, wash buffer and stop solution. ## I. Substantial Equivalence Information: 1. **Predicate device name(s):** *Borrelia Burgdorferi* IgG/IgM ELISA Test System 2. **Predicate K number(s):** K965131 3. **Comparison with predicate:** | Similarities | | | | --- | --- | --- | | Item | Device | Predicate | | Intended Use | Detect *B. burgdorferi* IgG/IgM antibodies in human serum | Detect *B. burgdorferi* IgG/IgM antibodies in human serum | | Reagents | Tris BSA Serum Diluent Tris Tween Wash Buffer Goat anti-human IgG (Fc) | Tris BSA Serum Diluent Tris Tween Wash Buffer Goat anti-human IgG (Fc) | | Technology | ELISA | ELISA | | Reagents | Horseradish Peroxidase Conjugate TMB enzyme substrate Sulfuric Acid Stop | Horseradish Peroxidase Conjugate TMB enzyme substrate Sulfuric Acid Stop | | Procedure | Serum incubation-20 min Conjugate incubation-20min Substrate incubation-10min Stop-add 100μl of stop | Serum incubation-20 min Conjugate incubation-20min Substrate incubation-10min Stop-add 100μl of stop | {2} Page 3 of 4 | | solution Read at 450nm | solution Read at 450nm | | --- | --- | --- | | Calculations | 1 cutoff calibrator, high, low, and negative controls Multiply cutoff calibrator by correction factor | 1 cutoff calibrator, high, low, and negative controls Multiply cutoff calibrator by correction factor | | Differences | | | | Item | Device | Predicate | | None | None | None | J. Standard/Guidance Document Referenced (if applicable): Not applicable K. Test Principle: Enzyme-Linked Immunosorbent Assays (ELISA) rely on the ability of biological materials, (i.e. antigens) to adsorb to plastic surfaces such as polystyrene (solid phase). When antigens bound to the solid phase are brought into contact with a patient's serum, antigen specific antibody, if present, will bind to the antigen on the solid phase forming antigen-antibody complexes. Excess antibody is removed by washing. This is followed by the addition of goat anti-human IgG conjugated with horseradish peroxidase which then binds to the antibody-antigen complexes. The excess conjugate is removed by washing, followed by the addition of Chromogen/Substrate Tetramethylbenzidine (TMB). If specific antibody to the antigen is present in the patient's serum, a blue color develops. When the enzymatic reaction is stopped with 1N H2SO4, the contents of the wells turn yellow. The color, which is proportional to the concentration of antibody in the serum, can be read on a suitable spectrophotometer or ELISA microwell plate reader. L. Performance Characteristics (if/when applicable): 1. Analytical performance: a. Precision/Reproducibility: Not Applicable. This is a change in distributor only. Performance characteristics were established in K965131. b. Linearity/assay reportable range: Not Applicable c. Traceability (controls, calibrators, or method): Not applicable d. Detection limit: Not Applicable e. Analytical specificity: Not Applicable f. Assay cut-off: Not Applicable 2. Comparison studies: a. Method comparison with predicate device: Not Applicable {3} Page 4 of 4 b. Matrix comparison: Not Applicable 3. Clinical studies: a. Clinical sensitivity: Not Applicable b. Clinical specificity: Not Applicable c. Other clinical supportive data (when a and b are not applicable): Not Applicable 4. Clinical cut-off: Not Applicable 5. Expected values/Reference range: Not Applicable M. Conclusion: The Trinity Biotech Captia B. burgdorferi IgG/IgM ELISA is substantially equivalent in performance to the predicate device for the presumptive detection of B. burgdorferi in human serum.
Innolitics

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