Lever
Lifestyle
- Stress management techniques
- Regular physical activity
- Adequate sleep
- Mindfulness meditation
Blutwerte · Marker
ACTH
Adrenocorticotropin · Adrenocorticotropes Hormon · Corticotropin
Hormone — StressachseZeitabhängig
- Einheit:
- pg/mL
ACTH quantifies the level of adrenocorticotropic hormone in the blood, reflecting pituitary function and adrenal stimulation.
Reference Ranges
Reference
7.2–63.3pg/mL
7.2
63.3
LowNormalHigh
Reference
Unit · pg/mLLevels vary with circadian rhythm; higher in the morning.
Overview
Übersicht
Adrenocorticotropic hormone (ACTH) is a peptide hormone produced by the anterior pituitary gland, playing a crucial role in the stress response by stimulating the adrenal cortex to release cortisol. It is a key component of the hypothalamus-pituitary-adrenal (HPA) axis, which regulates various physiological processes including metabolism, immune response, and stress adaptation. Clinically, ACTH measurement is vital in diagnosing disorders of the adrenal and pituitary glands. Elevated levels may indicate conditions such as Cushing's disease, where there is excessive production of cortisol due to pituitary adenomas. Conversely, low levels can be indicative of secondary adrenal insufficiency or hypopituitarism. For athletes and biohackers, ACTH levels can reflect stress and recovery status, influencing performance and adaptation to training. However, interpreting ACTH levels requires consideration of factors such as time of day, as levels typically peak in the early morning and decline throughout the day. Additionally, stress, illness, and medications can affect ACTH levels, necessitating careful control of these variables during testing.
Klinische Bedeutung
Elevated ACTH levels suggest pituitary adenomas or ectopic ACTH production, while low levels indicate potential adrenal insufficiency or pituitary dysfunction.
Dynamics
Trend Interpretation
Rising Values
Progressively rising ACTH may indicate worsening pituitary or adrenal dysfunction. Re-test in 4 weeks if outside optimal range.
Falling Values
Falling ACTH levels may suggest improving adrenal function or response to treatment.
Re-test Interval
4 weeks if outside optimal range
Etiology
Causes — High & Low
Cause
Elevated Levels
- Cushing's disease
- Ectopic ACTH syndrome
- Adrenal insufficiency
- Stress
- Pituitary adenomas
Cause
Low Levels
- Secondary adrenal insufficiency
- Hypopituitarism
- Exogenous steroid use
- Adrenal tumors
- Pituitary damage
Protocol
How to Optimize
Lever
Nutrition
- Balanced diet rich in fruits and vegetables
- Adequate hydration
- Omega-3 fatty acids
- Avoiding excessive caffeine
Note:
Consult a healthcare provider before making significant lifestyle changes, especially if underlying conditions are suspected.
Testing Guidelines
✓Fasting Not Required
🕐Time-Sensitive
ACTH peaks in the early morning; testing should be consistent in timing.
Testing Frequency
Annually for those with adrenal or pituitary disorders, or as advised by a physician.
Interfering Factors
- Recent stress
- Medication use
- Time of day
Related Markers
Related Peptides & Hormones
Cortisol
hormoneDirectly measures
Open Research Questions
Current research suggests that the relationship between salivary cortisol and plasma ACTH levels may not be linear, indicating potential confounders in stress research. Researchers have not yet established optimal reference ranges for ACTH in various populations, such as dogs and horses, complicating diagnosis. Additionally, clinical questions remain unanswered regarding the best diagnostic thresholds for ACTH in equine pituitary pars intermedia dysfunction and the impact of psychological stressors on ACTH levels across different species.
26 Research Publications
8,120
Total Citations
3
Human/RCT
92.7
Avg. Influence
2023
Latest
Sort
Filter
01Top
#01
Acute stressors and cortisol responses: a theoretical integration and synthesis of laboratory research.
Meta-AnalysisInfluence481.0
5828
This meta-analysis reviewed the effects of acute psychological stressors on cortisol responses. Researchers found that uncontrollable tasks with social-evaluative threats elicited the largest cortisol and ACTH changes, challenging the notion that all stressors trigger cortisol responses.
02Top
#02
Salivary cortisol as a biomarker in stress research.
ReviewInfluence50.0
1860
Researchers explored the use of salivary cortisol as a biomarker for psychological stress. They found that salivary cortisol measures may not directly correlate with plasma ACTH and cortisol levels, particularly under stress response conditions.
03Top
#03
Pathophysiology of hypercortisolism in depression.
UnknownInfluence20.0
267
This study explored the dynamics of ACTH and cortisol in depressed patients. Researchers found that hypercortisolemic patients had increased ACTH secretion, indicating central hypothalamic-pituitary-adrenal axis overactivity in severe depression.
04
#04
Cushing's disease.
Review
59
This study focused on Cushing's disease, a condition characterized by excessive ACTH secretion. Researchers found that diagnosis begins with confirming hypercortisolism, followed by identifying the cause, often requiring surgical intervention.
05
#05
Canine hypoadrenocorticism: pathogenesis, diagnosis, and treatment.
AnimalInfluence3.0
55
This study examined hypoadrenocorticism in dogs, a condition caused by immune-mediated destruction of adrenal glands. Researchers found that definitive diagnosis requires ACTH stimulation testing to show low cortisol levels. The prognosis is good with appropriate supplementation.
06
#06
Cushing’s disease and melancholia.
Review
13
This study examined the similarities between Cushing's disease and melancholic depression. Researchers found that both conditions exhibit raised ACTH levels and hypercortisolism, complicating the distinction between them.
07
#07
Diagnosis of equine pituitary pars intermedia dysfunction.
Review
11
Researchers reviewed the diagnosis of equine pituitary pars intermedia dysfunction (PPID) in horses. They found that basal ACTH concentration is a reliable diagnostic tool when combined with clinical judgment and appropriate thresholds.
08
#08
Effect of CRF, ACTH and adrenal steroids on sodium intake and excretion of rabbits.
In VitroInfluence1.0
8
Researchers studied the effects of CRF, ACTH, and adrenal steroids on sodium intake and excretion in rabbits. They found that intracerebroventricular infusion of CRF increased sodium turnover, indicating a complex interaction with ACTH and adrenal hormones.
09
#09
Cushing syndrome from an ACTH-producing pheochromocytoma or paraganglioma: structured review of 94 cases.
ReviewInfluence1.0
8
Researchers conducted a structured review of 94 cases of ACTH-producing pheochromocytomas/paragangliomas. They found that these tumors co-secrete catecholamines and ACTH, leading to significant morbidity, with most patients achieving a cure after surgical intervention.
10
#10
Rare clinical problem - isolated ACTH deficiency associated with chronic alcohol abuse.
Case Report
3
This case report examined isolated ACTH deficiency associated with chronic alcohol abuse. Researchers found low cortisol and ACTH levels in patients, with significant improvement following hydrocortisone treatment.
Clinical Trials (1)
1
Total Trials
2
Total Enrolled
Rosiglitazone in Treating Patients With Newly Diagnosed ACTH-Secreting Pituitary Tumor (Cushing Disease)
Sponsor
Jonsson Comprehensive Cancer Center
Enrollment
2
Started
2007
Primary outcome
Number of Responders
Cushing's Disease
Publication Trend
Research publications about ACTH over time
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