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Cortisol (Blood)
Alternate Names
Cortisol Level
Test Code
CORT
Testing Laboratory
Biochemistry
Specimen Type
Blood
Container Type
Serum tube (Red Cap w. Yellow Insert)
Medicare Rebate
Yes
Out of Pocket Costs
None
Ordering Information
Significant diurnal variation occurs in the circulating cortisol concentration, so a single blood sample is of limited value. Peak values occur between 08:00 - 10:00 am, and trough values occur in the late afternoon and evening.
Collection Instructions
Can combine with other Biochemistry tests requiring same tube type.
Transport Instructions
Transport ambient at room temperature
Storage Instructions
Store refrigerated at 4°C
Testing Frequency
Daily
Min Test Volume
1mL
Add On Test Suitability
This test cannot be added after 72 hours of collection.
