Alpha-1-Antitrypsin (A1AT)

High values may indicate

Elevated A1AT is an acute-phase response — it rises with inflammation, infection, or physical stress.

Low values may indicate

Low A1AT may indicate alpha-1-antitrypsin deficiency, a genetic disorder linked to early emphysema and liver disease.

Frequently asked questions

What is a normal Alpha-1-Antitrypsin (A1AT) level?

A typical reference range for Alpha-1-Antitrypsin (A1AT) is 90 — 200 mg/dL (source: AI-generated (reviewed)). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.

What units is Alpha-1-Antitrypsin (A1AT) measured in?

Alpha-1-Antitrypsin (A1AT) is most commonly reported in mg/dL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.

Where do Alpha-1-Antitrypsin (A1AT) reference ranges come from?

The reference range shown for Alpha-1-Antitrypsin (A1AT) is AI-generated and reviewed by BloodId — it is not from the ABIM standard. Educational information is from MedlinePlus (see our methodology). Reference ranges vary by lab, age, and sex, so always compare against the range on your own report.

Can I track Alpha-1-Antitrypsin (A1AT) over time?

Yes. Upload results from any lab and BloodId charts your Alpha-1-Antitrypsin (A1AT) over time against its reference range, so you can see whether the trend is rising, falling, or stable.

Related biomarkers

• ALP
• ALT (SGPT)
• AST (SGOT)
• Ammonia
• Bilirubin (Direct)
• Bilirubin (Indirect)