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 per milliliter (ng/mL). The table follows:

Type of drug or metabolite Initial test Confirmation test (1) Marijuana metabolites(i) Delta-9-tetrahydrocanna-binol-9-carboxylic acid(THC) 50 15 (2) Cocaine metabolites(Benzoylecgonine) 300 150 (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.