Table 7. Reference intervals for salivary cortisol [nmol/L].

Age	Morning values: 07:30–09:30				Noon values: 10:00–12:00				Evening values: 19:30–21:30
ee	Median	Q1-Q3	Mean	SD	Median	Q1-Q3	Mean	SD	Median	Q1-Q3	Mean	SD
0	5.1	2.8–8.2	10.2	21.0	5.0	3.7–8.6	8.5	11.8	3.4	2.1–5.7	7.5	15.3
1	5.8	3.7–9.8	8.3	8.3	4.8	2.8–6.8	6.6	7.5	2.8	1.9–4.8	5.1	6.9
2	6.1	3.9–9.8	8.0	7.4	5.2	3.4–7.3	6.3	5.8	2.7	1.7–4.9	4.4	5.9
3	7.5	4.2–11.9	13.8	38.0	5.9	4.1–8.5	9.1	17.1	3.3	1.9–5.9	9.2	22.5
4	8.0	5.7–13.5	12.6	18.2	6.2	3.7–9.0	8.5	15.0	2.5	1.5–4.4	6.8	17.9
5	8.3	5.0–13.8	16.9	35.5	5.9	3.5–8.6	16.6	43.3	3.1	1.3–6.2	12.9	32.0
6	8.9	6.2–14.9	24.6	63.8	5.4	3.9–8.8	20.3	77.1	2.3	1.3–5.0	19.4	81.4
7	7.7	5.0–14.6	26.5	78.9	5.1	3.6–8.1	21.5	71.0	2.3	1.4–4.2	10.9	35.1
8	8.4	5.6–14.2	33.0	95.4	5.9	3.5–10.6	22.9	77.9	2.2	1.4–4.3	20.3	80.6
9	8.9	6.0–14.8	21.9	49.4	5.6	3.6–9.9	19.4	77.6	2.3	1.2–5.2	9.8	28.5
10	10.0	6.1–14.2	21.3	43.6	5.4	3.7–8.9	14.4	34.3	2.4	1.3–5.6	10.7	28.7
11	10.5	6.9–17.1	23.9	60.7	5.3	3.4–9.7	11.9	22.1	2.1	1.2–5.6	13.4	40.6
12	10.9	5.9–14.4	22.9	54.4	5.2	3.1–8.6	14.4	35.4	2.0	1.1–4.2	11.6	33.9

Monthly median (quartile 1–quartile 3) and mean (standard deviation) salivary cortisol levels [nmol/L] at three different sampling times: morning (07:30–09:30), noon (10:00–12:00) and evening (19:30–21:30).