a Urine Test Tutorial ...
No Detox Pass a Urine Test method ...
and Substances Causing False Positives
3.TEST STANDARDS AND ACCURACY
The accuracy of drug testing is an area where I've decided to neglect
all statistics. Those who oppose drug testing provide numbers indicating
a high level of false positives. Those who favor drug testing provide
numbers indicating high levels of accuracy. The fact is that accuracy
varies widely from lab to lab. Generally speaking, NIDA labs are
accurate. Clinton writes:
NIDA (The National Institute of Drug Abuse) is the government organization
responsible for regulating the drug-testing industry. The vast majority
of urine drug screens done these days conform to NIDA specs, and
ALL testing associated with the government (department of transportation,
etc.) complies with the NIDA standard. It is NIDA that decides what
the "safe" cutoffs are to avoid false positives.... Despite
what you might hear on the net, urinalysis, if done correctly, is
a very accurate scientific procedure. I know of no labs that simply
report the results of the initial EMIT screening without confirming
the sample on GC/MS. The fact is, labs WANT you to test negative,
because then they only have to run an EMIT test on your urine (a
few cents). If you test positive, they must then confirm the positive
result on GC/MS, which is considerably more expensive. . . . Incidentally,
the machine which tests the hair is a relative of the GC/MS, but
is FAR more precise. It can accurately detect levels of THC in a
solution that are below 1 ng/mL!
CAP (College of American Pathologists) also certifies laboratories
the way NIDA does. NIDA keeps it's labs in check by sending positive
and negative double-blind samples. Lab personnel does not know what
samples came from NIDA. If the lab results are wrong, NIDA may take
away the labs certification. Only labs that perform the GC/MS on
site can be NIDA certified. Labs that send samples to another laboratory
for GC/MS confirmation are ineligible for NIDA certification. "Drug
testing when done properly with all required controls and confirmation
procedures is very accurate and reliable" (anon1).
Not all labs are NIDA/CAP certified. Some labs do not properly
and thoroughly clean the GC/MS equipment. Some labs don't even do
a GC/MS confirmation! Some labs use cheap alternative methods to
Many human errors occur in labs and cause inaccurate results. Some
are careless or irresponsible errors, and some errors are accidents.
Human error can ruin the results of ANY test, screening or confirmation
The only lab you should be concerned with is the one that is testing
you. Only Federal jobs require NIDA standards. Your typical private
employer may use any lab s/he chooses, which would very likely be
the least expensive. Businesses don't always choose NIDA labs that
follow-up a positive screening test with a confirmation GC/MS.
3.1 Procedures used:
In the workplace, an EMIT screening is typically used, with a CG/MS
confirmation if the EMIT is positive. However, this is not a rule;
employers can, and some do, use unusual procedures. Some employers
use the RIA, and some use the hair test. The government uses RIA.
They may or may not supervise the subject. Olympic athletes must
be monitored by courier after a competition. The courier stays with
the athlete until the athlete urinates, with a time frame of up
to sixty minutes.
3.2 False positives:
No laboratory process is completely free from error. The GC/MS
test is virtually error free, but the EMIT is far from accurate.
There are some false positives you should avoid if you're getting
an EMIT test. Take this seriously; false positives run high. If
you know that there will be a GC/MS confirmation test, you can disregard
this section. It would be too lengthy to list all of the false positives
here. Jeff Nightbyrd's "Conquering the Urine Tests" pamphlet
lists a majority of the false positives in detail. (If you are clean,
want to get back at the testing industry for conducting these absurd
tests, and know that there will be a confirmation test, you could
consume several false positives. This would force labs to pay for
the high priced GC/MS test, eventually drive up test expenses. You
will still pass the test as long as you didn't use any true positives.)
Ibuprofen is a common pain reliever that (even in low dosages)
used to cause a false THC positive on the EMIT test. The EMIT has
been changed to use a different enzyme to eliminate false positives
due to Ibuprofen. Ibuprofen in very high doses will still interfere
with both the EMIT and the GC/MS. There is some conflicting data
here because some sources say that the GC/MS tests can distinguish
between Ibuprofen and THC (as well as other over-the-counter drugs).
3.2.2 Cold remedies, pain relievers, hay fever remedies,
& diet pills:
Decongestants and diet pills result in false positives for amphetamine
use in one third of the test samples given to 40 of the countries
leading laboratories. There are roughly 300 over-the-counter drugs
that cause false positives on the EMIT.
Certain antibiotics (like Amoxicillin) are claimed to cause a positive
for heroin or cocaine. My expert source was unable to verify this,
so I regret that there is some uncertainty here.
3.2.4 Melanin (black skin):
Melanin is the brown pigment that protects your skin from UV rays.
It was raised as a discrimination issue in the 1980's, and argued
that melanin's molecular structure is similar to that of a THC metabolite.
Subsequent research revealed flaws in the data. Melanin was found
to have no effect on THC metabolite testing.
DHEA taken by AIDS patients will cause a false positive for anabolic
3.2.6 Dental treatment:
Caine products (like novacaine) used in dentistry have been known
to cause false positives for cocaine.
3.3 True positives (legitimate):
Some legal products actually contain small amounts of illegal chemicals.
All tests, including the GC/MS, will test you positive because the
metabolites derived from the true positive are identical to the
metabolites of the illegal drugs. One exception: poppy seeds will
not cause a positive GC/MS (explained below).
3.3.1 Poppy seeds:
Poppy seeds, usually on breads, contain traces of morphine, and
lead to positives for opiates. According to Dr. Grow, eating a pastry
filled with poppy seeds will bring results showing that you are
a *high level* opiate user. Harold Crossley, a nationally known
chemical dependency expert, said you would have to eat 100 poppy
seed bagels to score a positive on a drug test. When taken into
account that very few poppy seeds are sprinkled on bagels, you can
see that poppy seeds from a hundred poppy seed bagels will easily
fill a single large pastry. Purim cookies, a Jewish food known as
Hamantashen, may have five to six tablespoons of poppy seeds. A
couple Purim cookies may cause a positive test. Poppy seeds can
be distinguished from illicit drugs on the GC/MS test. Although
poppy seeds have the same metabolites as opium, these metabolites
are shown to have different patterns when viewed with the GC/MS.
3.3.2 Testosterone supplements:
Orchic extract (found in bull's balls) will give a positive for
anabolic steroid use. It is a legitimate substance that causes the
test to imply that you abuse steroids.