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. Author manuscript; available in PMC: 2011 Aug 23.
Published in final edited form as: Clin Chem. 2010 Apr 1;56(6):1007–1014. doi: 10.1373/clinchem.2009.141754

Fig. 1. Immunalysis Sweat/Oral Fluid Δ9-THC Direct ELISA linearity.

Fig. 1

Linearity determined with in-house calibrators (●) prepared by fortifying centrifuged, buffered OF with THC. Evaluation from 1–50 µg/L THC yielded a logarithmic regression line in good accordance with manufacturer-provided calibrators and controls (+). Logit values (L) were calculated as L = ln[(B/B0)/(1 – (B/B0))].