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. Author manuscript; available in PMC: 2008 Oct 7.
Published in final edited form as: Physiol Biochem Zool. 2005 Sep 26;78(6):1069–1084. doi: 10.1086/432855

Figure 2.

Figure 2

Accuracy of extraction procedures as assessed through quantitative recovery of exogenous corticoids from fecal extracts. a, Slopes of pooled samples extracted with three different protocols and spiked with standards provided with the corticosterone RIA kit. Method 1 (triangles): y = 0.9931x + 0.4752, r2 = 0.9979; method 2 (circles): y = 1.0002x + 0.3133, r2 = 0.993; method 3 (squares): y = 1.1118x + 0.0028, r2 = 0.9993. b, Slopes of pooled samples extracted with two different protocols and spiked with standards provided with the cortisol RIA kit. Method 1 (triangles): y = 1.0886x − 0.0012, r2 = 0.9954; method 3 (squares): y = 1.0556x + 0.0006, r2 = 0.9991.