Table 3. Mean (± SEM) and mean range of prolactin concentrations in Asian and African elephants with Low/Normal or High prolactin.

Calculated cut-offs were < or ≥ 14 ng/ml for Asian, and < or ≥ 18 ng/ml for African elephants.

	Asian		African
Prolactin Status	N	ng/ml	N	ng/ml
Low/Normal	73	6.71 ± 0.48a (1.59–13.85)	67	9.65 ± 0.45b (2.55–17.57)
High	2	21.26, 24.14	26	36.83 ± 4.80 (19.08–105.24)
All	75	6.98 ± 0.48a	93	22.75 ± 3.06b

^a,bSuperscripts denote differences (P < 0.05) in prolactin concentrations between species.