510(k) · Cleared
ClearedBorrelia Burgdorferi Igg Blot Test
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Gold Standard Diagnostics · LSR Reagent, Borrelia Serological Reagent
Cleared on Apr 11, 2012 as substantially equivalent to K950829 (Mardx Diagnostics, Inc., 1996) after a 104-day review. Its family tree reaches back 1 generation to 1996. 2 later devices descend from it.
- Decided
- Apr 11, 2012
- Review
- 104 days
- Class
- Class II
- Product code
- LSR
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K950829 (1996). 2 later devices descend from it, 2 citing it directly.
- Root · 1 generation backK950829 Mardx Lyme Disease (Igg) Marblot Strip Test SystemMardx Diagnostics, Inc. · 1996
- This deviceK113847 Borrelia Burgdorferi Igg Blot TestGold Standard Diagnostics · 2012
- Descendant · cites it directly · 0 of its ownK203292 Gold Standard Diagnostics Borrelia burgdorferi IgG/IgM ELISA Test KitGold Standard Diagnostics · 2021
- Descendant · cites it directly · 0 of its ownK203296 Gold Standard Diagnostics Borrelia burgdorferi IgG ELISA Test KitGold Standard Diagnostics · 2021
Most influential descendants
Showing 2 of 2 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K950829 | Mardx Lyme Disease (Igg) Marblot Strip Test System | Mardx Diagnostics, Inc. | 1996 | — |
| 0 (this device) | K113847 | Borrelia Burgdorferi Igg Blot Test | Gold Standard Diagnostics | 2012 | — |
| +1 | K203292 | Gold Standard Diagnostics Borrelia burgdorferi IgG/IgM ELISA Test Kit | Gold Standard Diagnostics | 2021 | — |
| +1 | K203296 | Gold Standard Diagnostics Borrelia burgdorferi IgG ELISA Test Kit | Gold Standard Diagnostics | 2021 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2021 | 2 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in LSR? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new LSR device
- #1 K254295 Sofia Lyme FIA; Sofia 2 Campylobacter FIAscore 12.5 · 4 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K950829 | Mardx Lyme Disease (Igg) Marblot Strip Test SystemSummary page 1…eri in human serum. The system is intended for use in testing human serum samples which have been found poisitive or equivocal using and EJA or TEA test procedure (K950829). 4) Description of the device The assay requires a total of 70 minutes incubation time. The test uses purified antigens co… | 1996 |
What descends from it? (2)
2 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
How does its category compare?
All LSR devicesLSR Reagent, Borrelia Serological Reagent: FDA decisions, review times, recalls and adverse event reports over 20 years. 2012, this device’s year, is highlighted.
FDA decisions per year · LSR
2in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · LSR
133in 2021
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · LSR
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LSR
1in 2025
MAUDE reports naming product code LSR, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 1 | — | 0 | 0 |
| 2008 | 2 | — | 0 | 2 |
| 2009 | 2 | — | 0 | 0 |
| 2010 | 1 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 1 |
| 2012 | 3 | 155 | 0 | 0 |
| 2013 | 2 | — | 1 | 0 |
| 2014 | 0 | — | 0 | 53 |
| 2015 | 1 | — | 0 | 25 |
| 2016 | 1 | — | 0 | 10 |
| 2017 | 6 | 150 | 0 | 9 |
| 2018 | 3 | 92 | 0 | 4 |
| 2019 | 4 | 86 | 0 | 15 |
| 2020 | 3 | 91 | 0 | 7 |
| 2021 | 6 | 133 | 2 | 4 |
| 2022 | 1 | — | 0 | 1 |
| 2023 | 1 | — | 0 | 2 |
| 2024 | 1 | — | 0 | 0 |
| 2025 | 2 | — | 1 | 1 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
The Gold Standard Diagnostics Borrelia burgdorferi B31 IgG Line Blot Test Kit is intended for the qualitative detection of IgG antibodies to B. burgdorferi sensu stricto (B31) in human serum. This test is intended for use in testing human serum samples which have been found positive or equivocal using an ELISA or IFA test procedure to provide supportive evidence of infection with B. burgdorferi.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K113847 · printed Nov 6, 2026
Cite this page
510(k) Report. “K113847: Borrelia Burgdorferi Igg Blot Test.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K113847
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026