Cup Drug Test Q&A

Does a faint line still mean negative results?

Yes, a faint T (Test) line is negative drug screen result as long as the C (Control) line is present.

As you can see in the negative test result photos below, the PCP strip is much lighter in color than the MOP, but the result is still negative.

How soon can I read the results?

Negative results can be read in as soon as 2 minutes, and positive results can be read up to 5 minutes.

Do not read after 5 minutes.

How do I perform the test?

Collect the urine sample in the cup to or past the fill line, and remove the label in order to read the results. Read the results at 5 minutes.

What are some causes for invalid test results?

There are a variety of reasons for invalid test results. A few are listed below:

There is not enough of the urine sample to saturate the testing strips.

There is too much urine beyond the max line of the cup.

Tampering with the sample could cause an invalid test result, if the specific gravity or pH of the sample is too low. The incorrect pH of the urine sample can be caused by using an old or diluted urine sample. The presence of water or chemical agents mixed with the urine can also affect the results.

How long can drugs be detected in the urine with a drug test?

The amount of time a drug remains detectable in urine varies depending on the drugs half-life, the subjects state of hydration and fluid balance, frequency of use, and the route of administration.

General guidelines are available for detection times, and many drugs stay in the system for 2-4 days. However, chronic use of marijuana can stay in the system for 3-4 weeks or longer after the last use. 

 Drug Class Street Name Prescription Brand Name Examples Detection Time in Urine
Amphetamine Stimulant speed Dexedrine, Benzedrine Up to 2 days
Barbiturates depressants/ Sedatives/hypnotics Downers, barbs, reds  Amytal, Fiorinal, Nembutal, Donna Short-acting: 2 days long acting: 1-3 weeks (based on half life)


depressants/ Sedatives/hypnotics
Bennies Valium, Ativan, Xanax, Serax

Therapeutic dose: 3 days

Chronic use: 4-6 months 

Cocaine (benzoylecgoninemetabolite) Stimulant coke, crack, rock, cocaine 
Up to 4 days
Codeine  Analgesic/ Opiate  N/A
2 days
Ethyl alcohol,ethanol
depressants/ Sedatives/hypnotics
alcohol, liquor, beer, wine, booze 
Urine: 2 to 12 hours serum/plasma: 1 to 12 hours
Analgesic/ Opiate 
smack, tar, chasing the tiger
2 days
Marijuana, Cannaboids  Hallucinogen  pot, dope, weed, hash, hemp  Marinol, Cesamet

Single use: 2 to 7 days

Prolonged, chronic use: 1 to 2 months or longer 

Analgesic/ Opiate 
fizzies Dolophine 3 days
speed, ice, crystal, crank Desosyn, Methedrine Up to to days
depressants/ Sedatives/hypnotics
ludes, disco biscuits, 714, lemmons Quaalude (off U.S. market) Up to 14 days
MDMA (methylenedioxymethampetamine)
ecstacy, XTC, ADAM, lover's speed
Up to 2 days
Analgesic/ Opiate 
Duramorph, Roxanol 2 days
Phencyclidine Hallucinogen  PCP, andel dust
8-14 days, but up to 30 days in chronic users
Analgesic/ Opiate 
Davocet, Darvon (all form of propoxyphene withdrawn from US market in November (2010).  6 hours to 2 days


Note: This table should be used as a general guideline only. Many variables may affect the amount of time a drug remains detectable in the urine or other biological samples, including a drug's half-life, the subject's state of hydration and fluid balance, frequency of use, route of administration, cut-off concentration used by the testing lab to detect the drug, or other variables.

The Insert says the detection time for marijuana is "up to 5+ days". Shouldn't it detect marijuana for up to a month, like normal lab tests?

The 5 day rule is a general rule to apply to one-time use, when the amount consumed exceeds the tests cutoff level of 50ng/mL (Nano Grams per Milliliter). However, estimating the detection time of a drug in urine varies depending on: Drug dose ROUTE of administration Duration of use (acute or chronic) RATE of metabolism.

WHY: In general, THC stays in the system longer than any other drug due to the fact that THC residue stays in the fat cells. The possible duration of THC remaining in the system varies depending on how heavy the dose was, how regularly the drug was consumed, body mass, etc. For most light smokers THC will be present in the body for 30 days, and heavy smokers can take up to 4 months to clear THC out from their body.

What does cross reactivity mean?

Cross-reactivity of structurally similar substances in a phenomena associated with immunoassay drug testing, resulting in false positive or negative results. Manufacturers will test for common potential interfering substances and lust these on package inserts. However, it is not possible to test every compound. Also, some compounds ingested in therapeutic dosage may not cross-react, but when abused in higher doses, may significantly influence urine immunoassay results.

TIP: You can find a cross-reaction chart at Link:

Can Ritalin test positive for any drug panels as a cross-reaction screening?

Ritalin is considered a stimulant, and contains properties that are similar to Amphetamines. Therefore, any drug such as Ritalin have properties similar to Amphetamines or Amphetamine related drugs have the potential to test positive in drug tests.

Ritalin can test positive for Amphetamine (AMP), Methamphetamine (MET), and or Methylenedioxy-Methamphetamine (MDMA).

Adderall, which is similar to Ritalin, also it has the potential to test as a false-positive for Amphetamines or Amphetamine related drug tests.

Can Suboxone be detected by the Opiate (OPI) test panel?

No, Suboxone is a synthetic opiate and will not be detected by the opiate test. Buprenorphine BUP (Suboxone®,Suubutex®3, Zubsolv®4, Bunavail™5) is an opiod medication used to treat opioid addiction in the privacy of a physician's office. Only the Buprenorphine (BUP) test can detect Suboxone.

NOTE: Easy@Home ECDOA-6125B and ECDOA-1144A3 drug test cup include the Buprenorphine test, and therfore detect Suboxone.

Why am I getting a false positive result?

A common reason for a false positive is that you have ingested a food or over-the-counter medication that will also test positive in a drug test due to similar chemical properties. Since the list of positive test including food and medication is extremely extensive , we suggest looking up the drug you tested positive for, and what could have produced a false positive.

Another possibility is that the drug test used was invalid. Although our drug tests have proven to be accurate over 99% of the time, there is that chance. If this is the case, we suggest trying again with a new drug test cup.

Does drinking a lot of water affect the urine test?

Drinking a large amount of water does dilute the urine sample, but this is only applicable if the individual was already very close to the cutoff level of the test to begin with.

Example: If the Cutoff level is 40ng/ml and the person had 43 ng/ml of the drug in their urine, they might be able to lower it to 39.3 ng/ml by drinking a lot of water.However, if they had 4000 ng/ml of the frug in their system, drinking water would not affect the results.

Can I test positive for marijuana from second-hand smoke exposure?

No, the levels of marijuana you receive from second hand smoke exposure is not high enough to test positive for the cutoff level of 50ng/ml. Second hand smoke will add to your concentrations but it will be at very low levels that our test will not detect from exposure to second hand smoke.

What is the difference between Amphetamine and Methamphetamine?

Methamphetamine is the parent drug which undergoes a chemical processes in the body and turns into Amphetamine.

Both drugs are highly potent, although methamphetamine may be more potent.

Can the OXY Test detect Hydrocodone? If not, which drug test can?

No, the OXY test cannot detect Hydrocodone.

The Easy@Home Morphine (MOP) test can detect Hydrocodone when it levels are above 5000 Nano Grams per milliliter, and the opiate (OPI) test can detect Hydrocodone when its levels are above 12500 ng/ml.