Albumin
- Sample Type
- Standard
- Fasting
- No
- Unit
- g/dL
Albumin in ascitic fluid is primarily measured to calculate the Serum-Ascites Albumin Gradient (SAAG). SAAG = (Serum Albumin) - (Ascitic Fluid Albumin). A SAAG score ≥ 1.1 g/dL indicates portal hypertension (e.g., cirrhosis), while a SAAG < 1.1 g/dL suggests other causes such as malignancy, tuberculosis, or nephrotic syndrome.
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Why Context Matters
The ascitic albumin value cannot be interpreted in isolation; it must be compared to a serum albumin sample drawn on the same day. Laboratory errors in either sample or significant changes in fluid volume can skew the SAAG calculation.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Albumin:
Official Sources
Research & Guidelines
- PubMed: Albumin Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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