Table 2.
Comparison of DRIand LZassays with GC/MSresults for benzoylecgonine from testing of 1,398 urine specimens
| DRI benzoylecgonine assay | + | − | |
|---|---|---|---|
| GC/MS | + | 643 | 21 |
| − | 1 | 733 | |
| Lin‐Zhi benzoylecgonine assay | |||
| GC/MS | + | 663 | 29 |
| − | 1 | 705 | |
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