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Sec.
40.87 What are the
cutoff concentrations for initial and confirmation tests?
(a) As a laboratory, you must use the cutoff concentrations
displayed in the following table for initial and confirmation drug
tests. All cutoff concentrations are expressed in nanograms [[Page
615]] per
milliliter (ng/mL). The table follows: ------------------------------------------------------------------------
Initial
Type of drug or
metabolite
test
Confirmation test ------------------------------------------------------------------------ (1)
Marijuana metabolites........
50 ........................ (i)
Delta-9-tetrahydrocanna-binol-
15 9-carboxylic
acid (THC). (2)
Cocaine metabolites
300 150 (Benzoylecgonine). (3)
Phencyclidine (PCP)..........
25 25 (4)
Amphetamines.................
1000 ........................ (i)
Amphetamine.................. ...........
500 (ii)
Methamphetamine............. ...........
500 (Specimen must also
contain amphetamine at
a
concentration of
greater than or equal
to 200 ng/mL.) (5)
Opiate metabolites...........
2000 ........................ (i)
Codeine...................... ...........
2000 (ii)
Morphine.................... ...........
2000 (iii)
6-acetylmorphine (6-AM).... ...........
10 (Test for 6-AM in the
specimen. Conduct this
test
only when specimen
contains morphine at a
concentration greater
than
or equal to 2000
ng/mL.) ------------------------------------------------------------------------
(b) On an initial drug test, you must report a result below the
cutoff concentration as negative. If the result is at or above the
cutoff concentration, you must conduct a confirmation test.
(c) On a confirmation
drug test, you must report a result below the cutoff concentration as
negative and a result at or above the cutoff concentration as confirmed
positive.
(d) You must report
quantitative values for morphine or codeine at 15,000 ng/mL or above.
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