Angiotensin I
Angiotensin I is an inactive peptide in the renin-angiotensin-aldosterone system (RAAS). Renin cleaves angiotensinogen into angiotensin I, which is then converted by ACE into the active angiotensin I…
Category: Hormones
Also known as: angiotensin i, angiotensin 1, ang i, ang-i, ang1, angiotenzin i
Reference range: 11–88 pg/mL (Source: ABIM)
Standard unit: pg/mL
High values may indicate
High angiotensin I levels typically reflect elevated renin activity, seen in renovascular hypertension, kidney disease, heart failure, dehydration, or use of diuretics and ACE inhibitors.
Low values may indicate
Low angiotensin I may indicate suppressed renin activity, primary aldosteronism (Conn's syndrome), or excess salt intake.
Frequently asked questions
- What is a normal Angiotensin I level?
- A typical reference range for Angiotensin I is 11–88 pg/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Angiotensin I measured in?
- Angiotensin I is most commonly reported in pg/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Angiotensin I reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Angiotensin I over time?
- Yes. Upload results from any lab and BloodId charts your Angiotensin I over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
Analyze your Angiotensin I with AI