510(k) · Cleared
ClearedRedi-Screen
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Redwood Biotech, Inc. · DJC Thin Layer Chromatography, Methamphetamine
Cleared on Oct 6, 1999 after a 20-day review. The FDA summary names its predicate without a number.
- Decided
- Oct 6, 1999
- Review
- 20 days
- Class
- Class II
- Product code
- DJC
- Recalls
- None
- Predicates
- 0
The FDA summary names its predicate without a number.
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 DJC? 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 DJC device
- #1 K253705 Healgen® Accurate Oral Fluid Drug Testscore 12.2 · 5 generations · no Class I recall
- #2 Held for the reportin the report
What was it cleared against? (5)
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 |
|---|---|---|---|
| * | — | Redi-THC Named without a submission number | |
| * | — | Redi-PCP Named without a submission number | |
| * | — | Redi-Cocaine Named without a submission number | |
| * | — | Redi-Opiates Named without a submission number | |
| * | — | Redi-Methamphetamine Named without a submission number |
What descends from it?
No later submission names this one as a predicate yet.
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.
How does its category compare?
All DJC devicesDJC Thin Layer Chromatography, Methamphetamine: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · DJC
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · DJC
258in 2018
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · DJC
No recall names DJC since 2007.
Adverse event reports per year · DJC
2in 2018
MAUDE reports naming product code DJC, 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 | 0 | — | 0 | 0 |
| 2008 | 1 | — | 0 | 0 |
| 2009 | 0 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 1 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 1 |
| 2018 | 3 | 258 | 0 | 2 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 0 |
| 2024 | 0 | — | 0 | 0 |
| 2025 | 1 | — | 0 | 0 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
The Redi-Screen is a qualitative, one step, immunochromatographic competitive assay used to screen human urine for the presence of THC, Phencyclidine, Opiates, Cocaine and Methamphetamine at the following cut off concentrations;
THC 50ng/mL
PCP 25ng/mL
Opiates 300ng/mL
Cocaine 300ng/mL
Methamphetamine 1,000ng/mL
The test is qualitative and provides only a preliminary analytical result, which must be confirmed by an alternate methodology preferably, GC/MS.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K993100 · printed Nov 6, 2026
Cite this page
510(k) Report. “K993100: Redi-Screen.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K993100
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Page last updated Nov 3, 2026