Test Results For:
Adrenocorticotropin Hormone (ACTH)-Afternoon
Test Overview
- Test Name
-
Adrenocorticotropin Hormone (ACTH)-Afternoon
- Test Code
- ACTH-PM
Short Description
Adrenocorticotropin Hormone (ACTH)-Afternoon
Test Name
Adrenocorticotropin Hormone (ACTH)-Afternoon
Test Code
ACTH-PM
Category
Immunoassay
TAT
Main Lab:
12,
Hour(s)
Family Site:
<12hrs
Specimen(s)
1 x Venous blood - 5 mL Tube - Lavender - EDTA Plasma
Specimen Type
EDTA Plasma
Specimen Format
Tube
Specimen Colour
Lavender
Specimen Volume
5 mL
Sampling Order
4
Origin
Venous blood
Collection Time after baseline
-
Transport Temperature
-20°C
Accepted Other Specimens
-
TAT
Main Lab:
12,
Hour(s)
Family Site:
<12hrs
Test Stability
Room Temp:
3 Hour(s)
2–8°C:
20 Hour(s)
Methodology
-
Specimen Type
EDTA Plasma
Delay before pre-treatment
3
Transport temperature
-20°C
Test stability at room temperature
3 Hour(s)
Test stability at 2–8°C
20 Hour(s)
Haemolysis interference
No
Clinical Interest
ACTH (adrenocorticotropic hormone) measurement is indicated in the evaluation of adrenal and pituitary disorders.
In the diagnosis of Cushing's syndrome, it is used to differentiate between ACTH-dependent causes (e.g. pituitary adenoma, ectopic ACTH production) and ACTH-independent causes (e.g. adrenal tumours).
- In Addison's disease, low cortisol levels with high ACTH indicate primary adrenal insufficiency.
- In hypopituitarism, low ACTH with low cortisol suggests secondary adrenal insufficiency due to pituitary dysfunction.
- It helps to differentiate the causes of hypercortisolism by determining whether the excess cortisol is due to pituitary or ectopic secretion of ACTH.
Clinical Information Required
-
Patient Collection Note
Collection between 4:00 p.m. and 6:00 p.m.
Immediately after collection, place the tube in an ice bath.
LOINC Code
696-3, 51696-3
Outwork
No