Expected Turnaround Time
4 - 10 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Documents
Specimen Requirements
Specimen
Serum (preferred) or plasma, frozen
Volume
0.5 mL
Minimum Volume
0.1 mL (Note: This volume does not allow for repeat testing).
Container
Gel-barrier tube, red-top tube, lavender-top (EDTA) tube or green-top (heparin) tube
Collection
Serum/plasma must be separated from cells within 45 minutes of venipuncture. Send serum/plasma in a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Storage Instructions
Freeze
Stability Requirements
| Temperature | Period |
|---|---|
| Room temperature | 7 days |
| Refrigerated | 7 days |
| Frozen | 3 years |
| Freeze/thaw cycles | Stable x6 |
Test Details
Methodology
High-pressure liquid chromatography (HPLC) tandem mass spectrometry
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 500154 | Cortisol, Serum LCMS, Endo Sci | 2143-6 | 500155 | Cortisol, Serum LCMS | ug/dL | 2143-6 |