. 2021 Aug 23;10(9):1189–1199. doi: 10.1530/EC-21-0404

Table 2.

Correlation coefficients between salivary cortisol (F) and cortisone (E) and serum F.

	All patients, n = 174	Adrenal sufficient patients, n = 137		Central AI, n = 37
	All patients, n = 174	Normal HPA axis, n = 106	RAS, n = 31	Central AI, n = 37
Salivary F and serum F
Baseline (before LDSST)	0.75 (0.68–0.81)^a	0.55 (0.40–0.67)^a	0.75 (0.55–0.87)^a	0.73 (0.53–0.85)^a
30 min after 1 μg ACTH	0.50 (0.38–0.60)^a	ns	ns	0.62 (0.38–0.79)^a
Pooled results (before and after LDSST)	0.68 (0.62–0.73)^a	0.66 (0.57–0.73)^a	0.71 (0.56–0.82)^a	0.72 (0.58–0.81)^a
Salivary E and serum F
Baseline (before LDSST)	0.67 (0.58–0.75)^a	0.55 (0.40–0.67)^a	0.54 (0.23–0.73)^b	0.65 (0.40–0.81)^a
30 min after 1 μg ACTH	0.64 (0.54–0.72)^a	ns	ns	0.74 (0.54–0.86)^a
Pooled results (before and after LDSST)	0.76 (0.71–0.80)^a	0.70 (0.63–0.76)^a	0.67 (0.50–0.72)^a	0.73 (0.60–0.83)^a

^aP < 0.001; ^bP < 0.01

AI, adrenal insufficiency; HPA, hypothalamic–pituitary–adrenal; RAS, relative adrenal sufficiency.