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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-tetrahydrocannabinol-9-caroxylic acid (THC) |
50 | 15 |
| (2) Cocaine metabolites
(Benzoylecgonine) |
300 | 150 |
| (3) Phencyclidine (PCP) | 25 | 25 |
| (4) Amphetamines
(i) Amphetamine (ii) Methamphetamine |
1000 |
500 500 (Specimen must also contain amphetamine at a concentration of greater than or equal to 200 ng/mL |
|
(5) Opiate metabolites (i) Codeine (ii) Morphine (iii) 6acety1morphine |
2000 |
2000 2000 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.