510(k) · Cleared
ClearedLYHER® Urine Marijuana (THC) Test Kit (Strip), LYHER® Urine Marijuana (THC) Test Kit (Cassette)
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Hangzhou Laihe Biotech Co., Ltd. · LDJ Enzyme Immunoassay, Cannabinoids
Cleared on Jan 10, 2024 as substantially equivalent to K182123 (Advin Biotech, Inc., 2019) after a 135-day review. Its family tree reaches back 7 generations to 1995.
- Decided
- Jan 10, 2024
- Review
- 135 days
- Class
- Class II
- Product code
- LDJ
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 7 generations to K945610 (1995). 28 ancestors in all. No later device cites it as a predicate yet.
- Root · 7 generations backK945610 Abusign (TM) Amp, Doa-Amp, Accusign (TM) Amp-Doa-Amp, Biosign (TM)…Princeton BioMeditech Corp. · 1995
- 6 generations backK011673 Acon Amp One Step Amphetamine Test Strip, Acon Amp One Step…ACON Laboratories, Inc. · 2001
- 5 generations backK020313 Acon One Step Multi-Drug Multi-Line Screen Test Card; Acon One Step…Acon Laboratories Co. · 2002
- 4 generations backK031759 Acon Spectrum Multi-Drug Multi-Line Drug Screen Test Card and Acon…ACON Laboratories, Inc. · 2003 · Recalled
- 3 generations backK061718 Innovacon Spectrum II Test CardInnovacon, Inc. · 2006 · Recalled
- 2 generations backK122809 Advin Multi-Drug Screen Test Cassette, Dip Card and CupAdvin Biotech · 2013
- 1 generation backK182123 ATTEST Drug Screen Cup, ATTEST Drug Screen Dip CardAdvin Biotech, Inc. · 2019
- This deviceK232604 LYHER® Urine Marijuana (THC) Test Kit (Strip), LYHER® Urine…Hangzhou Laihe Biotech Co., Ltd. · 2024
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −7 | K945610 | Abusign (TM) Amp, Doa-Amp, Accusign (TM) Amp-Doa-Amp, Biosign (TM) Amp, Doa-Amp | Princeton BioMeditech Corp. | 1995 | — |
| −6 | K011673 | Acon Amp One Step Amphetamine Test Strip, Acon Amp One Step Amphetamine Test… | ACON Laboratories, Inc. | 2001 | — |
| −5 | K020313 | Acon One Step Multi-Drug Multi-Line Screen Test Card; Acon One Step Multi-Drug… | Acon Laboratories Co. | 2002 | — |
| −4 | K031759 | Acon Spectrum Multi-Drug Multi-Line Drug Screen Test Card and Acon Spectrum… | ACON Laboratories, Inc. | 2003 | 1 |
| −3 | K061718 | Innovacon Spectrum II Test Card | Innovacon, Inc. | 2006 | 6 |
| −2 | K122809 | Advin Multi-Drug Screen Test Cassette, Dip Card and Cup | Advin Biotech | 2013 | — |
| −1 | K182123 | ATTEST Drug Screen Cup, ATTEST Drug Screen Dip Card | Advin Biotech, Inc. | 2019 | — |
| 0 (this device) | K232604 | LYHER® Urine Marijuana (THC) Test Kit (Strip), LYHER® Urine Marijuana (THC)… | Hangzhou Laihe Biotech Co., Ltd. | 2024 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1996 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 7 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 0 |
| 2004 | 3 | 0 |
| 2005 | 1 | 0 |
| 2006 | 1 | 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 LDJ? 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 LDJ device
- #1 K232732 Rapid Marijuana (THC) Test Strip 20, Rapid…score 9.4 · 10 generations · no Class I recall
- #2 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 |
|---|---|---|---|
| * | K182123 | ATTEST Drug Screen Cup, ATTEST Drug Screen Dip CardSummary page 5…Section 5 510(k) Summary Hangzhou Laihe Biotech Co., Ltd. 5.3 Predicate Device: ATTEST Drug Screen Cup, ATTEST Drug Screen Dip Card, K182123 5.4 Device Description The LYHER® Urine Multi-Drug Test Kit(Cup), LYHER® Urine Multi-Drug Test Kit(Cassette), LYHER® Urine Multi… | 2019 |
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.
What does this lineage say?
- The line of descent spans 29 years and passes through 7 companies; a new generation was cleared every 4.8 years on median.
- 2 of the 28 ancestors have a recall of any class.
- 2 other devices also cite its predicate K182123.
How does its category compare?
All LDJ devicesLDJ Enzyme Immunoassay, Cannabinoids: FDA decisions, review times, recalls and adverse event reports over 20 years. 2024, this device’s year, is highlighted.
FDA decisions per year · LDJ
2in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · LDJ
48in 2015
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · LDJ
1in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · LDJ
1in 2015
MAUDE reports naming product code LDJ, 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 | 2 | — | 4 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 4 | 219 | 0 | 0 |
| 2012 | 4 | 193 | 0 | 0 |
| 2013 | 3 | 162 | 0 | 0 |
| 2014 | 2 | — | 0 | 0 |
| 2015 | 3 | 48 | 0 | 1 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 1 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 1 | — | 1 | 0 |
| 2024 | 2 | — | 0 | 0 |
| 2025 | 0 | — | 0 | 0 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The LYHER® Urine Multi-Drug Test Kit (Cup), LYHER® Urine Multi-Drug Test Kit (Cassette), and LYHER® Urine Multi-Drug Test Kit (Dipcard) are rapid lateral flow immunoassays for the qualitative detection of d-Amphetamine, d-Methamphetamine, Benzoylecgonine, Morphine, Phencyclidine and THC-COOH in human urine. The test cut-off concentrations and the compounds the tests are calibrated to are as follows: Test Calibrator Cut-off (ng/mL) Amphetamine (AMP)…
Read the full statement (180 words)
The LYHER® Urine Multi-Drug Test Kit (Cup), LYHER® Urine Multi-Drug Test Kit (Cassette), and LYHER® Urine Multi-Drug Test Kit (Dipcard) are rapid lateral flow immunoassays for the qualitative detection of d-Amphetamine, d-Methamphetamine, Benzoylecgonine, Morphine, Phencyclidine and THC-COOH in human urine. The test cut-off concentrations and the compounds the tests are calibrated to are as follows:
Test Calibrator Cut-off (ng/mL)
Amphetamine (AMP) d-Amphetamine 1000
Cocaine (COC) Benzoylecgonine 300
Marijuana (THC) 11-nor-A9-THC-9-COOH 50
Methamphetamine (MET) d-Methamphetamine 1000
Opiates(OPI) Morphine 2000
Phencyclidine (PCP) Phencyclidine 25
The single or multi-test panels can consist of the above listed analytes in any combination, up to a maximum of 6 analytes. The drug screen tests are intended for prescription use only. The tests provide only a preliminary result. A more specific alternative chemical method should be used in order to obtain a confirmed presumptive positive result. Gas Chromatography/Mass Spectrometry (GC/MS), Liquid Chromatography / Mass Spectrometry (LC/MS) and their tandem mass-spectrometer versions are the preferred confirmatory methods. Careful consideration and judgment should be applied to any drugs of abuse screen test result, particularly when evaluating preliminary positive results.
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/K232604 · printed Nov 5, 2026
Cite this page
510(k) Report. “K232604: LYHER® Urine Marijuana (THC) Test Kit (Strip), LYHER® Urine Marijuana (THC) Test Kit (Cassette).” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K232604
Report an extraction error
Are you the manufacturer?
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