510(k) · Cleared
ClearedON Call Home Drug Test for Marijuana and on Call Home Drug Test for Marijuana and Cocaine
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
ACON Laboratories, Inc. · LDJ Enzyme Immunoassay, Cannabinoids
Cleared on Jun 24, 2005 as substantially equivalent to K040327 (Accu-Stat Diagnostics, Inc., 2004) and 2 other predicates after a 71-day review. Its family tree reaches back 3 generations to 1995.
- Decided
- Jun 24, 2005
- Review
- 71 days
- Class
- Class II
- Product code
- LDJ
- Recalls
- None
- Predicates
- 3
Its longest line of descent runs back 3 generations to K945610 (1995). 11 ancestors in all. No later device cites it as a predicate yet.
- Root · 3 generations backK945610 Abusign (TM) Amp, Doa-Amp, Accusign (TM) Amp-Doa-Amp, Biosign (TM)…Princeton BioMeditech Corp. · 1995
- 2 generations backK011673 Acon Amp One Step Amphetamine Test Strip, Acon Amp One Step…ACON Laboratories, Inc. · 2001
- 1 generation backK020313 Acon One Step Multi-Drug Multi-Line Screen Test Card; Acon One Step…Acon Laboratories Co. · 2002
- This deviceK050936 ON Call Home Drug Test for Marijuana and on Call Home Drug Test for…ACON Laboratories, Inc. · 2005
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −3 | K945610 | Abusign (TM) Amp, Doa-Amp, Accusign (TM) Amp-Doa-Amp, Biosign (TM) Amp, Doa-Amp | Princeton BioMeditech Corp. | 1995 | — |
| −2 | K011673 | Acon Amp One Step Amphetamine Test Strip, Acon Amp One Step Amphetamine Test… | ACON Laboratories, Inc. | 2001 | — |
| −1 | K020313 | Acon One Step Multi-Drug Multi-Line Screen Test Card; Acon One Step Multi-Drug… | Acon Laboratories Co. | 2002 | — |
| 0 (this device) | K050936 | ON Call Home Drug Test for Marijuana and on Call Home Drug Test for Marijuana… | ACON Laboratories, Inc. | 2005 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1996 | 2 | 0 |
| 2001 | 5 | 0 |
| 2004 | 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? (3)
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 |
|---|---|---|---|
| * | K040327 | Accu-Stat Home Drug Tests for Marijuana (THC) and for Marijuana & Cocaine (THC, Coc)Summary page 3…Marijuana and the On Call Home Drug Test for Marijuana & Cocaine are identical to the Accu-StatT M Home Drug Test for Marijuana (THC), or Marijuana & Cocaine (THC, COC) (K040327) that is legally marketed for over-the-counter use, and the ACON THC One Step Marijuana Test Device (K003557) and the ACON One St… | 2004 |
| * | K003557 | Acon THC One Step Marijuana Test Strip (Urine);Acon THC One Step Marijuana Test Device…Summary page 3…Test for Marijuana (THC), or Marijuana & Cocaine (THC, COC) (K040327) that is legally marketed for over-the-counter use, and the ACON THC One Step Marijuana Test Device (K003557) and the ACON One Step Multi-Drug Multi-Line Screen Test Card/Device (K020313) that are legally marketed for professional use; an… | 2001 |
| * | K020313 | Acon One Step Multi-Drug Multi-Line Screen Test Card; Acon One Step Multi-Drug…Summary page 3…legally marketed for over-the-counter use, and the ACON THC One Step Marijuana Test Device (K003557) and the ACON One Step Multi-Drug Multi-Line Screen Test Card/Device (K020313) that are legally marketed for professional use; and because no special skills, training, education, or licensing is required to… | 2002 |
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 10 years and passes through 3 companies; a new generation was cleared every 3.1 years on median.
- None of the 11 ancestors has a recall.
How does its category compare?
All LDJ devicesLDJ Enzyme Immunoassay, Cannabinoids: FDA decisions, review times, recalls and adverse event reports over 20 years.
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 On Call Home Drug Test for Marijuana is a screening test for the rapid detection of Marijuana (THC) and its metabolites in urine at a designated cut-off concentration of 50 ng/mL for Marijuana (THC). The test is intended for over-the-counter (OTC) consumer use as the first step in a two step process to provide consumers with information concerning the presence of THC or its metabolites in a urine sample. Information, along with the materials for…
Read the full statement (331 words)
The On Call Home Drug Test for Marijuana is a screening test for the rapid detection of Marijuana (THC) and its metabolites in urine at a designated cut-off concentration of 50 ng/mL for Marijuana (THC). The test is intended for over-the-counter (OTC) consumer use as the first step in a two step process to provide consumers with information concerning the presence of THC or its metabolites in a urine sample. Information, along with the materials for shipping a portion of the urine specimen to the laboratory for confirmation testing of a preliminary positive result, the second step in the process, is provided.
This assay provides only a preliminary analytical test result. A more specific alternate chemical method must be used in order to obtain a confirmed analytical result. Gas chromatography/mass spectrometry (GC/MS) is the preferred confirmatory method. Clinical consideration and professional judgment should be applied to any drug of abuse test result, particularly when preliminary positive results are indicated.
The On Call Home Drug Test Marijuana & Cocaine is a screening test for the rapid detection of Marijuana (THC), Cocaine (COC) and their metabolites in urine at a designated cut-off concentration of 50 ng/mL for Marijuana (THC) and 300 ng/mL for Marijuana & Cocaine (THC, COC). The test is intended for over-the-counter (OTC) consumer use as the first step in a two step process to provide consumers with information concerning the presence of THC, COC or their metabolites in a urine sample. Information, along with the materials for shipping a portion of the urine specimen to the laboratory for confirmation testing of a preliminary positive result, the second step in the process, is provided.
This assay provides only a preliminary analytical test result. A more specific alternate chemical method must be used in order to obtain a confirmed analytical result. Gas chromatography/mass spectrometry (GC/MS) is the preferred confirmatory method. Clinical consideration and professional judgment should be applied to any drug of abuse test result, particularly when preliminary positive results are indicated.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K050936 · printed Nov 4, 2026
Cite this page
510(k) Report. “K050936: ON Call Home Drug Test for Marijuana and on Call Home Drug Test for Marijuana and Cocaine.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K050936
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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