510(k) · Cleared
ClearedWondfo Amphetamine Urine Test Wondfo Barbiturates Urine Test Wondfo Benzodiazepines Urine Test
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Guangzhou Wondfo Biotech Co., Ltd. · DKZ Enzyme Immunoassay, Amphetamine
Cleared on Aug 1, 2012 as substantially equivalent to K020771 (ACON Laboratories, Inc., 2002) after a 26-day review. Its family tree reaches back 1 generation to 2002.
- Decided
- Aug 1, 2012
- Review
- 26 days
- Class
- Class II
- Product code
- DKZ
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K020771 (2002). No later device cites it as a predicate yet.
- Root · 1 generation backK020771 Acon One Step Drug Screen Test CardACON Laboratories, Inc. · 2002
- This deviceK121987 Wondfo Amphetamine Urine Test Wondfo Barbiturates Urine Test Wondfo…Guangzhou Wondfo Biotech Co., Ltd. · 2012
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K020771 | Acon One Step Drug Screen Test Card | ACON Laboratories, Inc. | 2002 | — |
| 0 (this device) | K121987 | Wondfo Amphetamine Urine Test Wondfo Barbiturates Urine Test Wondfo… | Guangzhou Wondfo Biotech Co., Ltd. | 2012 | — |
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 DKZ? 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 DKZ device
- #1 K233019 AllTest Multi-Drug Rapid Test Cup; AllTest…score 14.6 · 8 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 |
|---|---|---|---|
| * | K020771 | Acon One Step Drug Screen Test CardSummary page 1…62.3100 DIS 21CFR 862.3150 JXM 2l1CFR 862.3170 5. Predicate Devices: K020771 Acon Laboratories, Inc. One Step Drug Screen Te… | 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?
- Its one ancestor has no recall.
- 8 other devices also cite its predicate K020771.
How does its category compare?
All DKZ devicesDKZ Enzyme Immunoassay, Amphetamine: FDA decisions, review times, recalls and adverse event reports over 20 years. 2012, this device’s year, is highlighted.
FDA decisions per year · DKZ
1in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · DKZ
180in 2019
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · DKZ
1in 2017
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · DKZ
2in 2025
MAUDE reports naming product code DKZ, 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 | — | 1 | 0 |
| 2008 | 2 | — | 3 | 12 |
| 2009 | 2 | — | 5 | 1 |
| 2010 | 4 | 233 | 0 | 1 |
| 2011 | 6 | 123 | 4 | 2 |
| 2012 | 5 | 55 | 0 | 0 |
| 2013 | 8 | 103 | 1 | 1 |
| 2014 | 8 | 128 | 3 | 9 |
| 2015 | 5 | 107 | 0 | 8 |
| 2016 | 5 | 215 | 0 | 8 |
| 2017 | 0 | — | 1 | 0 |
| 2018 | 3 | 128 | 0 | 0 |
| 2019 | 3 | 180 | 0 | 0 |
| 2020 | 1 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 3 |
| 2022 | 0 | — | 0 | 4 |
| 2023 | 2 | — | 0 | 7 |
| 2024 | 1 | — | 0 | 1 |
| 2025 | 0 | — | 0 | 2 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
Wondfo Amphetamine Urine Test is an immunochromatographic assay for the qualitative determination of d-Amphetamine in human urine at a cutoff concentration of lOOOng/mL. The test is available in a dip card format and a cup format. It is intended for prescription use and over the counter use. The test provides only preliminary test results. A more specific alternative chemical mnethod must be used in order to obtain a conformed analytical result. GCIMS is…
Read the full statement (305 words)
Wondfo Amphetamine Urine Test is an immunochromatographic assay for the qualitative determination of d-Amphetamine in human urine at a cutoff concentration of lOOOng/mL. The test is available in a dip card format and a cup format. It is intended for prescription use and over the counter use.
The test provides only preliminary test results. A more specific alternative chemical mnethod must be used in order to obtain a conformed analytical result. GCIMS 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.
Wondfo Secobarbital Urine Test is an immunochromatographic assay for the qualitative determination of Secobarbital (major metabolite of Barbiturates) in human urine at a cutoff concentration of 300ng/mL. The test is available in a dip card format and a cup format. It is intended for prescription use and over the counter use.
The test provides only preliminary test results. A more specific alternative chemical method must be used in order to obtain a conformed analytical result. GCIMS 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.
Wondfo Oxazepam Urine Test is an immunochromatographic assay for the qualitative determination of Oxazepam (major metabolite of Benzodiazepines) in human urine at a cutoff concentration of 300ng~mL. The test is available in a dip card format and a cup format It is intended for prescription use and over the counter use.
The test provides only preliminary test results. A more specific alternative chemical method must be used in order to obtain a conformed analytical result. GCJMS is the preferred confirmatory method. Clinical consideration and professionaI judgment should be exercised with any drug of abuse test result, particularly when the preliminary result is positive.
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/K121987 · printed Nov 4, 2026
Cite this page
510(k) Report. “K121987: Wondfo Amphetamine Urine Test Wondfo Barbiturates Urine Test Wondfo Benzodiazepines Urine Test.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K121987
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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