Salivary cortisol
Clinical Background:
Screening test for Cushing's syndrome (usually late-night samples)
Screening test for Cushing's syndrome (usually late-night samples)
Test Details
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Discipline:
Biochemistry
Biochemistry
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Specimen Container Adult:
Saliva (collected in Salivette or passively into plain plastic tube)
Saliva (collected in Salivette or passively into plain plastic tube)
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Specimen Container Paediatric:
Saliva (collected in Salivette or passively into plain plastic tube)
Saliva (collected in Salivette or passively into plain plastic tube)
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Minimum Volume Adult:
0.5 mL
0.5 mL
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Minimum Volume Paediatric:
0.5 mL
0.5 mL
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Special Requirement:
Samples should usually be taken after 23:00 when screening for Cushing's
Samples should usually be taken after 23:00 when screening for Cushing's
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Sample Stability:
Store at -20°C
Store at -20°C
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Transport Requirements:
Sample must be sent early in the week
Sample must be sent early in the week
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Reference Ranges:
Morning (7-9 am): 3.2-22.8 nmol/L
Evening (11-12pm): <3.2 nmol/LMorning (7-9 am): 3.2-22.8 nmol/L
Evening (11-12pm): <3.2 nmol/L -
Routine Contact Name:
Duty Biochemist
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Routine Telephone:
Freeman: 0191 244 8889
RVI: 0191 282 9719Freeman: 0191 244 8889
RVI: 0191 282 9719 -
Routine Email:
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Specialist Test:
Yes
Yes
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Specialist Contact Name:
Endocrine Lab
Endocrine Lab
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Specialist Telephone:
0191 282 4025
0191 282 4025