510(k) · Cleared
ClearedPsychemedics Cannabinoids Eia
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Psychemedics Corp. · LDJ Enzyme Immunoassay, Cannabinoids
Cleared on May 1, 2012 as substantially equivalent to K011426 (Psychemedics Corp., 2002) after a 300-day review. Its family tree reaches back 1 generation to 2002. 1 later device descends from it.
- Decided
- May 1, 2012
- Review
- 300 days
- Class
- Class II
- Product code
- LDJ
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K011426 (2002). 1 later device descends from it, 1 citing it directly.
- Root · 1 generation backK011426 Psychemedics Ria Cannabinoid AssayPsychemedics Corp. · 2002
- This deviceK111929 Psychemedics Cannabinoids EiaPsychemedics Corp. · 2012
- Descendant · cites it directly · 0 of its ownK122759 Omega Laboratories Hair Drug Screening Assay Cardoxy-THC (Thca)Omega Laboratories, Inc. · 2012
Most influential descendants
Showing 1 of 1 · See all- K122759Omega Laboratories Hair Drug Screening Assay Cardoxy-THC (Thca)Omega Laboratories, Inc. · 2012 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K011426 | Psychemedics Ria Cannabinoid Assay | Psychemedics Corp. | 2002 | — |
| 0 (this device) | K111929 | Psychemedics Cannabinoids Eia | Psychemedics Corp. | 2012 | — |
| +1 | K122759 | Omega Laboratories Hair Drug Screening Assay Cardoxy-THC (Thca) | Omega Laboratories, Inc. | 2012 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2012 | 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
- #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 |
|---|---|---|---|
| * | K011426 | Psychemedics Ria Cannabinoid AssaySummary page 2…drug of abuse test result, particularly when the preliminary result is positive. 510k K111929 K011426 Measurand Carboxy-THC /Cannabinoids Carboxy-THC /Cannabinoids Matrix Human head or… | 2002 |
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K122759 | Omega Laboratories Hair Drug Screening Assay Cardoxy-THC (Thca) | 2012 | 0 |
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?
- Its one ancestor has no recall.
- Of its descendants, K122759 (Omega Laboratories, Inc., 2012) has gone furthest, with 0 descendants of its own.
How does its category compare?
All LDJ devicesLDJ Enzyme Immunoassay, Cannabinoids: FDA decisions, review times, recalls and adverse event reports over 20 years. 2012, 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 Psychemedics Microplate EIA for Cannabinoids in Hair is an enzyme immunoassay (EIA) for the preliminary qualitative detection of cannabinoids in human head and body hair samples using a 11-nor-9-Carboxy- A9 -THC calibrator at 10 pg/10 mg hair cutoff for the purpose of identifying marijuana use. This is an in vitro diagnostic device intended exclusively for Psychemedics use only and is not intended for sale to anyone. The Psychemedics Chemiluminescent…
Read the full statement (131 words)
The Psychemedics Microplate EIA for Cannabinoids in Hair is an enzyme immunoassay (EIA) for the preliminary qualitative detection of cannabinoids in human head and body hair samples using a 11-nor-9-Carboxy- A9 -THC calibrator at 10 pg/10 mg hair cutoff for the purpose of identifying marijuana use. This is an in vitro diagnostic device intended exclusively for Psychemedics use only and is not intended for sale to anyone.
The Psychemedics Chemiluminescent Microplate EIA for Cannabinoids assay provides only a preliminary analytical test result. A more specific alternative chemical method must be used in order to obtain a confirmed analytical result. Gas Chromatography/Mass Spectrometry/Mass Spectrometry (GC/MS/MS) is the preferred confirmatory method. Clinical consideration and professional judgment should be exercised with any drug of abuse test result, particularly when the preliminary result is positive.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K111929 · printed Nov 6, 2026
Cite this page
510(k) Report. “K111929: Psychemedics Cannabinoids Eia.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K111929
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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