U-Screen CLIA Waived Drug Test Cup

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The U-Screen CLIA Waived Cup is only a preliminary screen and all positive screens must be confirmed using a more definitive form of testing such as LC/MS (Liquid Chromatography/Mass Spectrometry). Confirmation programs are available upon request. For more information, call your sales representative at 1-800-992-1345.

UScreen Cup

Features & Benefits

  • Easy one-step operation
  • Zero exposure to donor specimen
  • Tests for 12 drugs of abuse
  • Donor cannot defeat assay
  • Built-in specimen validity test included: SG, CR, OX


Drug Names and Abbreviations

Drug Name Drug Code Cut Off Level
Cocaine COC 300 ng/mL
Methamphetamine mAMP 1000 ng/mL
Marijuana THC 50 ng/mL
Opiates OPI 300 ng/mL
Amphetamines AMP 1000 ng/mL
Oxycodone OXY 25 ng/mL
Phencyclidine PCP 25 ng/mL
Benzodiazepines BZO 300 ng/mL
Barbiturates BAR 300 ng/mL
Methadone MTD 300 ng/mL
Ecstasy MDMA 500 ng/mL
Tricyclic Antidepressants TCA

Adulterants and Abbreviations

Specimen Validity Test / Adulterants SVT Code
Specific Gravity SG
Creatinine CR
Oxidants OX

The specimen validity test is based on the color response of chemical indicators at presence of adulterants. Creatinine (Cr), bleach/oxidant (Bl), and specific gravity (S.G.) are tested to determine the integrity of urine samples.

  • Cr level: Creatinine reacts with a creatinine indicator in an alkaline medium which forms a purplish-brown color complex. The color intensity is directly proportional to the concentration of creatinine. Urine samples with creatinine concentrations of less than 20 mg/ml are dilute, which may be indicative of adulteration.
  • Bl level: Tests for the presence of oxidants, such as bleach, hydrogen peroxide and Pyridinium Chlorochromate, in the urine. Observation of a blue-green, brown, or orange color indicates adulteration with bleach or other oxidizing agents.
  • S.G. level: Tests for sample dilution. Normal levels for specific gravity will range from 1.005-1.025. Specific gravity levels of less than 1.003 or higher than 1.030 is an indication of adulteration. The color changes from dark blue to blue-green in urine of low ionic concentration to green and yellow-green in urine of higher ionic concentration. Urine specific gravity below 1.005 or above 1.025 is considered abnormal, which may indicate adulteration.

Performing the Test

Step 1:  Have the donor provide a specimen in cup.

Step 2:  Verify that temperature is within range on the temperature strip (90° - 100°F).

Step 3:  To activate test, place the screw-top lid on the cup and turn until tight.

Step 4:  Remove label.  For cups with specimen validity tests, compare specimen validity test pads with the color chart.  If pad colors are outside normal range, open a second test cup, collect a new specimen, and retest.

Step 5:  Read the drug screen test results when control lines are clearly visible.


Reading the Results Window

Reading the results of UScreen Cup


Control lines are lines that appear in the test windows next to the letter "C" and indicate that the test has run and functioned properly.

Test lines are lines that appear in the test windows next to the drug abbreviations indicating the presence or absence of drug metabolite.

NOTE:  If a test line appears, that is an indication of a "negative" specimen.  Only the absence of a line (missing line) indicates a "positive" specimen.


Interpreting the Results

A negative result is indicated by the presence of both a “C” control line or and a “T” test line for each designated drug.
The presence of a “C” control line and a very light “T” test line indicates a negative result. Any indication of a “T”test line is interpreted as a negative result.
A positive result is indicated by the presence of a “C” control line and the absence of a "T" test line. Wait 5 minutes to readpositive results.
An invalid result is indicated when the "C" line is completely missing from one or more test windows. If this happens, run another test.

Click to View: U-Screen Drug Test Information