High Positive Concentration,
X
(ng/mL)
Following Specimen Concentration,
Y
(ng/mL)
Conclusion
X
> 100,000
Y > 50
Repeat analysis after blank
100,000 >
X
≥ 50,000
Y < 50
No action required
100,000 >
X
≥ 50,000
50 < Y < 200
Repeat analysis after blank
100,000 >
X
≥ 50,000
Y > 200
No action required
Table 6:
Carryover evaluation criteria for benzoylecgonine. Values for other medications will vary. The ULOL and carryover limit for benzoylecgonine is 100,000 ng/mL.
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