Cortisol Baseline
Ordering Info & Methodology
Test Code
Cerner Synonyms
CORF
Cortisol ACTH Stimulation Test, Cosyntropin test, Cortisol Baseline, Cortrosyn Stimulation Test, Cosyntropin Stimulation Test
Turn Around Time
Methodology
Analyzed within 1 day of receipt.
Sandwich immunoassay, electrochemiluminescence, Roche Cobas Cortisol II
Ordering Guide
CORF, COR30 and COR60
Specimen Requirements
Sample Type
Collection Container
Alternate Collection Containers
Serum
Gold
Red
0.5 mL
Add on stability
This is the length of time after sample collection that this analyte is stable. Test can be added to a previously collected sample if the time since collection is less than the add on stability time.
Minimum Volume
Add On Stability
Collection and Shipping Requirements
Refrigerate. Send on ice pack.
Reference Intervals
Female Reference Interval
Age Category | Reference Interval | units |
|---|---|---|
Male Reference Interval
Age Category | Reference Interval | units |
|---|---|---|
Additional Notes
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Measurement Uncertainty (MU)
Every laboratory value is an estimate of the true concentration of substance. MU is the 95% confidence interval around that estimate. 95% of the time, the true concentration will be within the range of the reported value ±MU. This value is based on analytical variability (precision) and does not reflect other factors such as sample collection and handling which may also affect the result.
Example
Reported sodium = 140 mmol/L
Sodium MU = 1%
Expanded uncertainty = 140 mmol/L ± 1% or 140mmol/L ± 1.4 mmol/L
Interpretation - the true value of sodium in the sample is in the range 138.6-141.4 mmol/L, with 95% confidence.
5%
Measurement Uncertainty
Interpretation provided by laboratory professional staff. New cortisol II immunoassay is more specific than previous immunoassays. Therefore cut offs for adequate adrenal response may vary from literature sources. Please call the laboratory if there are questions regarding interpretation.
Exogenous estrogens (e.g. oral contraceptives) can cause a falsely reassuring response, and should be discontinued prior to testing.