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One-Step Marijuana Test Cassette
One-Step Marijuana Test Cassette
Place of Origin:
China
Brand:
SPAN
Model:
Supplier:
Span Biotech Ltd
Price:
Negotiated
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294 
Updated:
10/30/2025
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    One-Step Marijuana Test Cassette  
     
    Package insert for Marijuana Test Cassette.
    This Instruction Sheet is for testing of Marijuana.
    For professional and in vitro diagnostic use only.
     
    Intended Use
    The THC One-Step Marijuana Test Cassette is a lateral flow chromatographic immunoassay for the qualitative detection of Marijuana in urine at the cut-off concentrations of 50ng/ml.
    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 used.
    Summary
    THC (D9-tetrahydrocannabinol) is the primary active ingredient in cannabinoids (marijuana). When smoked or orally administered, it produces euphoric effects. Users have impaired short term memory and slowed learning. They may also experience transient episodes of confusion and anxiety. Long term relatively heavy use may be associated with behavioral disorders. The peak effect of smoking marijuana occurs in 20-30 minutes and the duration is 90-120 minutes after one cigarette. Elevated levels of urinary metabolites are found within hours of exposure and remain detectable for 3-10 days after smoking. The main metabolite excreted in the urine is 11-nor-D9-tetrahydrocannabinol-9-carboxylic acid (D9-THC-COOH).
    The THC One-Step Marijuana Test Cassette yields a positive result when the concentration of marijuana in urine exceeds 50ng/ml. This is the suggested screening cut-off for positive specimens set by the Substance Abuse and Mental Health Services Administration (SAMHSA, USA).
    Principle
    The THC One-Step Marijuana Test Cassette is an immunoassay based on the principle of competitive binding. Drugs which may be present in the urine specimen compete against their respective drug conjugate for binding sites on their specific antibody.
    During testing, a urine specimen migrates upward by capillary action. A drug, if present in the urine specimen below its cut-off concentration, will not saturate the binding sites of its specific antibody. The antibody will then react with the drug-protein conjugate and a visible colored line will show up in the test line region of the specific drug cassette. The presence of drug above the cut-off concentration will saturate all the binding sites of the antibody. Therefore, the colored line will not form in the test line region.
    A drug-positive urine specimen will not generate a colored line in the specific test line region of the cassette because of drug competition, while a drug-negative urine specimen will generate a line in the test line region because of the absence of drug competition.
    To serve as a procedural control, a colored line will always appear at the control line region, indicating that proper volume of specimen has been added and membrane wicking has occurred.
    Warnings and Precautions
    • For in vitro diagnostic use only.
    • For healthcare professionals and professionals at point of care sites.
    • Do not use after the expiration date.
    • Please read all the information in this leaflet before performing the test.
    • The test panel should remain in the sealed pouch until use.
    • All specimens should be considered potentially hazardous and handled in the same manner as an infectious agent.
    • The used test panel should be discarded according to federal, state and local regulations.
    Composition
    The test contains a membrane strip coated with Marijuana -protein conjugates on the test line, a goat-anti-mouse IgG polyclonal antibody on the control line, and a dye pad which contains colloidal gold-monoclonal antibody specific to Marijuana.
    Each box contains test panels and package insert.
    Storage and Stability
    • Store as packaged in the sealed pouch at room temperature (2-30℃ or 36-86℉).The kit is stable within the expiration date printed on the labeling.
    • Once open the pouch, the test should be used within one hour. Prolonged exposure to hot and humid environment will cause product deterioration.
    Additional Special Equipment
    ŸSpecimen collection containerŸTimerŸExternal controls
    Specimen
    • The urine specimen must be collected in a clean and dry container. Urine collected at any time of the day may be used. Urine specimens exhibiting visible precipitates should be centrifuged, filtered, or allowed to settle to obtain a clear supernatant for testing.
    • Urine specimens may be stored at 2-8°C for up to 48 hours prior to testing. For prolonged storage, specimens may be frozen and stored below -20°C. Frozen specimens should be thawed and mixed well before testing.
    Test Procedure
    Allow the test and urine samples to equilibrate to room temperature (15-30℃or 59-86℉) prior to testing.
    1. Remove the test cassette from the sealed pouch.
    2. Hold the dropper vertically and transfer 3 full drops(approx. 100ml) of urine to the specimen well of the test cassette, and then begin timing. See the illustration below.
    3. Wait for colored lines to appear. Interpret the test results at 3-5 minutes. Do not read results after 10 minutes.
    Interpretation of Results
    Negative:*Two lines appear. One red line should be in the control region (C), and another apparent red or pink line adjacent should be in the test region (T). This negative result indicates that the drug concentration is below the detectable level.
    *NOTE: The shade of red in the test line region (T) will vary, but it should be considered negative whenever there is even a faint pink line.
    Positive: One red line appears in the control region (C). No line appears in the test region (T). This positive result indicates that the drug concentration is above the detectable level.
    Invalid: Control line fails to appear. Insufficient specimen volume or incorrect procedural techniques are the most likely reasons for control line failure. Review the procedure and repeat the test using a new test panel. If the problem persists, discontinue using the lot immediately and contact your local distributor.
    Quality Control
    A procedural control is included in the test.  A red line appearing in the control region (C) is considered an internal procedural control. It confirms sufficient specimen volume, adequate membrane wicking and correct procedural technique. 
    Control standards are not supplied with this kit. However, it is recommended that positive and negative controls be tested as good laboratory practice to confirm the test procedure and to verify proper test performance.
    Limitations
    • The THC One-Step Marijuana Test Cassette provides only a qualitative, preliminary analytical result. A secondary analytical method must be used to obtain a confirmed result. Gas chromatography and mass spectrometry (GC/MS) is the preferred confirmatory method.
    • There is a possibility that technical or procedural errors, as well as other interfering substances in the urine specimen may cause erroneous results.
    • Adulterants, such as bleach and/or alum, in urine specimens may produce erroneous results regardless of the analytical method used. If adulteration is suspected, the test should be repeated with another urine specimen.
    • A Positive result does not indicate level or intoxication, administration route or concentration in urine.
    • A Negative result may not necessarily indicate drug-free urine. Negative results can be obtained when drug is present but below the cut-off level of the test.
    • Test does not distinguish between drugs of abuse and certain medications.
    • A positive test result may be obtained from certain foods or food supplements.
    Performance Characteristics
     
      Accuracy  
         
    A side-by-side comparison was conducted using the THC One-Step Marijuana Test Cassette and commercially available drug rapid tests. Testing was performed on approximately 300 specimens per drug type previously collected from subjects presenting for Drug Screen Testing. Presumptive positive results were confirmed by GC/MS. The following compounds were quantified by GC/MS and contributed to the total amount of drugs found in presumptive positive urine samples tested.
    Test Compounds Contributed to the Totals of GC/MS
    THC 11-nor-∆9-tetrahydrocannabinol-9-carboxylic acid
    The following results are tabulated from these clinical studies:
    %Agreement with Commercial Kit   %Agreement with GC/MS
      THC   THC
    Positive
    Agreement    		 100% Positive
    Agreement    		 96%
    Negative
    Agreement    		 100% Negative
    Agreement    		 92%
    Total
    Results    		 100% Total
    Results    		 94%
     
    Forty (40) clinical samples for each drug were run using each strip contained within the THC One-Step Marijuana Test Cassette by an untrained operator at a Professional Point of Care site. Based on GC/MS data, the operator obtained statistically similar Positive Agreement, Negative Agreement and Overall Agreement rates as trained Laboratory personnel.
    Precision
     
    A study was conducted at three physician offices by untrained operators using three different lots of product to demonstrate the within run, between run and between operator precision. An identical panel of coded specimens, containing drugs at the concentration of ± 50% and ± 25% cut-off level, was labeled as a blind and tested at each site. The results are given below:
    11-nor-Δ9-THC-
    9 COOH conc.(ng/ml)    		 n per site Site A Site B Site C
    - + - + - +
    0 15 15 0 15 0 15 0
    25 15 15 0 15 0 15 0
    37.5 15 14 1 12 3 13 2
    62.5 15 1 14 0 15 0 15
    75 15 0 15 0 15 0 15
     
    Analytical Sensitivity
     
    A drug-free urine pool was spiked with drugs at concentrations listed. The results are summarized below.
    Drug concentration
    Cut-off Range    		 n THC
    - +
    0% Cut-off 30 30 0
    -50% Cut-off 30 30 0
    -25% Cut-off 30 16 14
    Cut-off 30 2 28
    25% Cut-off 30 1 29
     
     
    Analytical Specificity
     
    The following table lists the concentration of compounds (ng/ml) that are detected positive in urine by the THC One-Step Marijuana Test Cassette at 3-5 minutes.
    Marijuana (THC) Concentration(ng/ml)
    11-nor-∆9-THC-9 COOH 50
    Cannabinol 20,000
    11-nor-∆8-THC-9 COOH 30
    ∆8-THC 15,000
    ∆9-THC 15,000
     
    Effect of Urinary Specific Gravity
     
    Fifteen (15) urine samples of normal, high, and low specific gravity ranges (1.000-1.037) were spiked with drugs at 50% below and 50% above cut-off levels respectively. The THC One-Step Marijuana Test Cassette was tested in duplicate using fifteen drug-free urine and spiked urine samples. The results demonstrate that varying ranges of urinary specific gravity does not affect the test results.
    Effect of the Urinary pH
     
    The pH of an aliquoted negative urine pool was adjusted to a pH range of 5 to 9 in 1 pH unit increments and spiked with drugs at 50% below and 50% above cut-off levels. The spiked, pH-adjusted urine was tested with the THC One-Step Marijuana Test Cassette. The results demonstrate that varying ranges of pH does not interfere with the performance of the test.
    Cross-Reactivity
     
    A study was conducted to determine the cross-reactivity of the test with compounds in either drug-free urine or Marijuana positive urine. The following compounds show no cross-reactivity when tested with the THC One-Step Marijuana Test Cassette at a concentration of 100µg/ml..
     
    Non Cross-Reacting Compounds
     
     
    Acetaminophen Acetophenetidin
    N-Acetylprocainamide Acetylsalicylic acid
    Aminopyrine Amoxicillin
    Ampicillin L-Ascorbic acid
    Apomorphine Aspartame
    Atropine Benzilic acid
    Benzoic acid Benzphetamine*
    Bilirubin D/L-Brompheniramine
    Caffeine Cannabidol
    Chloralhydrate Chloramphenicol
    Chlorothiazide D/L-Chloropheniramine
    Chlorpromazine Chloroquine
    Cholesterol Clonidine
    Cortisone L-Cotinine
    Creatinine Deoxycorticosterone
    Dextromethorphan Diclofenac
    Diflunisal Digoxin
    Diphenhydramine Ecgonine methyl ester
    L -Ψ-Ephedrine β-Estradiol
    Estrone-3-sulfate Ethyl-p-aminobenzoate
    [1R,2S] (-) Ephedrine L(–)-Epinephrine
    Erythromycin Fenoprofen
    Furosemide Gentisic acid
    Hemoglobin Hydralazine
    Hydrochlorothiazide Hydrocortisone
    O-Hydorxyhippuric acid p-Hydroxyamphetamine
    p-Hydroxytyramine Ibuprofen
    Iproniazid D/L-Isoproterenol
    Isoxsuprine Ketamine
    Ketoprofen Labetalol
    Loperamide Meperidine
    Meprobamate Methoxyphenamine
    Methylphenidate Nalidixic acid
    Naloxone Naltrexone
    Naproxen Niacinamide
    Nifedipine Norethindrone
    D-Norpropoxyphene Noscapine
    D/L-Octopamine Oxalic acid
    Oxolinic acid Oxymetazoline
    Papaverine Penicillin-G
    Pentazocine hydrochloride Perphenazine
    Phenelzine Trans-2-phenylcyclo-propylamine hydrochloride
    L-Phenylephrine β-Phenylethylamine
    Phenylpropanolamine Prednisolone
    Prednisone D/L-Propranolol
    D-Propoxyphene D-Pseudoephedrine
    Quinacrine Quinine
    Quindine Ranitidine
    Salicylic acid Serotonin
    Sulfamethazine Sulindac
    Tetracycline Tetrahydrocortisone 3-acetate
    Tetrahydrozoline Tetrahydrocortisone 3 (β-D-glucuronide)
    Thiamine Thioridazine
    D/L-Tyrosine Tolbutamide
    Triamterene Trifluoperazine
    Trimethoprim Tryptamine
    D/L-Tryptophan Tyramine
    Uric acid Verapamil
    Zomepirac  
    *Parent compound only; metabolizes amphetamine and methamphetamine in urine.
    Bibliography
    1. Baselt RC.  Disposition of Toxic Drugs and Chemicals in Man. 6th Ed. Biomedical Publ., Davis, CA. 2002; 129.
    2. FDA Guidance Document: Guidance for Premarket Submission for Kits for Screening Drugs of Abuse to be Used by the Consumer, 1997.
    3. A Handbook of Drug and Alcohol Abuse, Gail Winger, Third Edition, Oxford Press, 1992, page 146.
    4. Tietz NW. Textbook of Clinical Chemistry. W.B. Saunders Company. 1986; 1735.
    5. Hawks RL, CN Chiang. Urine Testing for Drugs of Abuse. National Institute for Drug Abuse (NIDA), Research Monograph 73, 1986.
     
     
        
     
     
     
     
     
     
     
    Index of Symbols  
    Do not reuse For in vitro diagnostic use only
    Stored between 2-30℃ Consult instruction for use
    Caution Lot number
    Use by Contains sufficient for tests
    Keep away from sunlight Keep dry
    Manufacturer Do not use if package is damaged
    Authorized Representative in the European Community
               
     
     
     
     
     
    Version No.:4.0                    
    Effective Date: Feb. 24, 2012
     
    Span Biotech Ltd. is a research based company for rapid tests, with strong support from National Key Laboratory of Technology Projects of 10th and 11th Five-Year Plan and Faculty of Life Sciences of HuBei University. SpanBio also housed a R&D team that is developing gene recombination, cell cultivation and protein purification techniques. SpanBio pays strict attention on rapid tests for human being, animal diseases and food safety detection. It provides a number of customized services to professional distributors and partnering affiliates with excellent quality, competitive prices and super service.
     
    Our mission:
     
    • Always best of all and always pay attention to innovation.
    • Special customized service tightly following customers’ requests.
    • Integrated excellent quality, competitive prices and super service together.
     
     
    Packaging Details:

    Pouch+Box+Carton packaging

    (1) With our company’s Logo

    (2) With the natural package

    (3) With OEM package

    (4) ODM

     Anna

    Int'l Market Executive
    SPANBIO
    Tel: +86(755)89589611
    Cell Phone:+8613417551798(WhatsApp)
    EMAIL: anna.lee@spanbio.com
    bio-equip.cn
    Span Biotech Ltd. is a research based company for rapid tests, with strong support from National Key Laboratory of Technology Projects of 10th and 11th Five-Year Plan and Faculty of Life Sciences of HuBei University. SpanBio also housed a R&D team that is developing gene recombination, cell cultivation and protein purification techniques. SpanBio pays strict attention on rapid tests for human being, animal diseases and food safety detection. It provides a number of customized services to professional distributors and partnering affiliates with excellent quality, competitive prices and super service.
    Efficiently structured to provide lasting and economic health care solutions with export ready goods, our main products cover the following immunodiagnostic rapid test kits:
    Rapid Tests for Human Use :
    1) Fertility: Pregnancy HCG, ovulation LH, menopause FSH
    2) Infectious diseases: Hepatitis B, HCV, HIV
    3) Drug abuse: AMP, BAR, BZO, COC, mAMP, MOP, MTD, OPI, PCP, TCA, THC
    4) Tumor markers: CEA, PSA, AFP, FOB
    5) STDs(Sexually Transmitted Diseases): Gonorrhea, syphilis, chlamydia
    6) New products: Malaria, H. Pylori, Multi-Hepatis B Panel (HBsAg, Anti-HBs, HBeAg, Anti-HBe, Anti-HBc), Blood Glucose Test, Multi-drug of Abuse Panel, Avian (Bird) Flu Rapid Test, etc.
    Rapid Tests for Veterinary :
    1) Bovine: Cow Pregnancy , Cow Ovulation, Bovine Brucella, Bovine Tuberculosis ,Food and Mouth Disease NSP Ab Test
    2) Canine: Canine Distemper, Canine Parvovirus, Canine Coronavirus
    3) Feline : Feline Leukemia Virus Ag Rapid Test ,Feline Panleucopenia Virus Ag Test,Feline Immunodeficiency Virus Ab Test
    Rapid Tests for Food Safety :
    1)For Antibiotics Residue : Nitrofurans (AOZ,AMOZ, AHD, SEM), Streptomycin , Sulfonamides , Chloramphenicol , Quinolone , Beta-Lactam&Tetracycline Combo (2 in 1), β-Lactams & Streptomycin & Chloramphenicol & Tetracyclines Combo (4 in 1), Beta-Lactam, Tetracycline test
    2) For Beta-Agonist Residue : Ractopamine, Clenbuterol ,Salbutamol
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