Table 5.

Range of post-partum relaxin optical density readings for female coyotes shown in 2 week increments; 2000–2003 breeding season, NWRC facility, Millville, UT, USA

	Weeks post-partum
	1–2	3–4a	9–10	11–12	13–14	15–16	17–18	19–20
Minimum	0.180	1.076	0.072	0.001	0.004	0.004	0.007	0.009
Maximum	1.858	2.103	0.801	0.193	1.167	0.766	0.136	0.036
Median	0.773	1.315	0.328	0.123	0.090	0.049	0.028	0.015
% Neg	0	0	0	17	26	28	62	80
n	37	5	4	6	19	25	13	5

^aThe females were not sampled between weeks 4 and 9 after parturition. % Neg: percentage of samples (n) testing negative in each 2-week dataset.