Test Code C00 C30 C60 Cortisol Stimulation Test
EHR Test Codes
| Test Code | Test Name | |
| Atlas | C00, C30, C60 | Cort Stim, Pre, Cort Stim 30, Cort Stim 60 |
| Cerner | Cortisol Stimulation Test |
Specimen Requirements
Preparation of Patient:
Outpatients: Draw performed in Outpatient Infusion Clinic by IV Therapists. Injection given by IV Therapy. Appointments are preferred but not required.
1. IV Therapist verifies the following information is provided:
A. Face sheet
B. Physician orders or laboratory request form
C. Progress notes
D. Charge slip
2. Obtain 1 vial 0.25 mg Cosyntropin® from pharmacy.
3. Identify patient and explain procedure.
4. Question patient to verify proper preparation.
5. Place patient in supine position, apply tourniquet, palpate and locate vein, cleanse site with alcohol, and start INT lock.
6. Draw pre-injection blood specimen for baseline cortisol level (minimum volume: 3 mL), and label as such with collection time.
7. IV Therapy gives 0.25 mg Cosyntropin® intramuscular injection. Write injection time on laboratory request form.
8. Draw blood specimens for cortisol level at 30 and 60 minutes post-injection. Label each specimen accordingly.
9. Send specimens and laboratory request form to main laboratory.
10. Remove INT lock.
11. Chart in progress notes/computer.
12. Place chart in file drawer.
Inpatients: Collection performed in patient’s room by phlebotomist. Injection is given by patient’s nurse.
1. Floor staff obtains 1 vial 0.25 mg Cosyntropin® from pharmacy
2. Phlebotomist calls patient's nurse to verify Cosyntropin® has been ordered and arranges draw time.
3. Patient's nurse:
A. Contacts phlebotomist when Cosyntropin® is available and ready to proceed.
B. Verifies proper patient preparation protocol has been followed.
C. Identifies patient and explains procedure.
4. Phlebotomist verifies patient identification.
5. Phlebotomist draws and labels pre-injection specimen in presence of nurse.
6. Patient's nurse gives 0.25 mg Cosyntropin® intramuscular injection.
7. Phlebotomist notes injection time and begins timing for subsequent samples.
8. Phlebotomist draws blood specimens for cortisol levels at 30 and 60 minutes post injection, labeling accordingly.
Note: Adverse reactions other than rare hypersensitivity are not reported
Container Type:
Green Top 5mL Lithium Heparin Separator Tube
Or
Gold Top 6mL SST Gel & Clot Activator Tube
Specimen Type:
Plasma or Serum
Specimen Volume:
2.5 mL Plasma or Serum minimum .5 mL
Specimen Handling/Transport:
Separate plasma or serum from cells within 2 hours of collection.
Transport ambient room temperature.
Specimen Stability/Storage:
5 days refrigerated 2-8°C
Performing Laboratory
Munson Medical Center Laboratories
Chemistry Department
Priority, Frequency, & Turnaround
Priority:
Non-Emergent
Frequency:
24 hours 7 days a week
Turnaround:
0 - 1 days
Methodology
Chemiluminescence Immunoassay
Reporting
Reference Range:
| Basal Cortisol ug/dL | Peak Cortisol ug/dL | Comment |
| > 2.3 | > 18.0 | Normal response of cortisol to cosyntropin stimulation. A normal response does not preclude mild primary or Secondary adrenal insufficiency. |
| > 2.3 | < 18.0 | Inadequate response of cortisol to cosyntropin stimulation, suggesting adrenal insufficiency. A confirmatory ACTH level is suggested if a diagnosis of primary adrenal insufficiency is being considered and to distinguish primary and secondary adrenal insufficiency. |
| < 2.3 | < 18.0 | Basal cortisol is low and there is inadequate response to cosyntropin stimulation, suggesting adrenal insufficiency. A confirmatory ACTH is suggested, if clinically indicated, to distinguish primary and secondary adrenal insufficiency. |
| < 2.3 | > 18.0 | While basal cortisol is low, suggesting adrenal insufficiency, there is adequate response to cosyntropin stimulation, suggesting some degree of adrenal reserve. |
| >18.0 | any value | The basal cortisol is above the accepted cut-off of the consyntropin stimulation test (18 ug/dL). There are no established interpretative guidelines in this setting, and the results must be evaluated in the specific context of this individual patient. Exogenous glucocorticoids, particularly prednisone and prednisolone, may elevate the measured cortisol at therapeutic concentrations by cross-reactivity in the assay. |
Critical Decision:
None
Clinical Significance
A cortisol stimulation test (ACTH stimulation test) measures how well the adrenal glands respond to adrenocorticotropic hormone (ACTH) by producing cortisol. Typically utilized to diagnose adrenal insufficiency (Addision's disease) or pituitary disorders. Test can also be helpful in determining if the body can produce enough cortisol during stress or illness guiding steroid treatment.
CPT Code(s)
82533