Room temperature: 2 days, Chilled: 1 week, Frozen: 6 months
2 weeks (if dilution/control needed - TAT 4 weeks)
Room temperature: 2 days, Chilled: 1 week, Frozen: 6 months
Radioimmunoassay
A:ng/mL
B:nmol/L
SPECIAL OR DELICATE SAMPLE: the kit used to collect and transport the saliva sample is called a "Salivette". It is available upon request. Before sampling, the patient must observe a time of at least 30 minutes without consuming food or acidic beverages. It is very important not to contaminate the saliva sample with blood, therefore, it is necessary to avoid brushing teeth before collection. The collection protocol is described in the package insert accompanying the sampling kit.
CIRCADIAN RHYTHM: This biological molecule has a circadian rhythm (maximum concentration in morning), with a sufficiently significant amplitude to have an important influence on the clinical interpretation
Reference values for salivary cortisol
- Wake up: 1,1 - 8,0 ng/mL i.e. 3,1 - 22.2 nmol/L
- 30 minutes later: 2,0 - 10,8 ng/mL i.e. 5,5 - 29,7 nmol/L
- 1 hour after: 1,0 - 9,4 ng/mL i.e. 2,8 - 25,8 nmol/L
- 2 hours after: 0,8 - 5,7 ng/mL i.e. 2,3 - 15,9 nmol/L
- 5 hours after: 0,7 - 3,6 ng/mL i.e. 2,0 - 9,8 nmol/L
- 8 hours after: 0,6 - 3,1 ng/mL i.e. 1,5 - 8,7 nmol/L
-12 hours after: 0,3 - 3,2 ng/mL i.e. 0,9 - 8,9 nmol/L
- Midnight: < 1,1 ng/mL i.e. < 3,0 nmol/L