Biochemistry

Fluid Glucose

Normal Range
Similar to serum (approx. 70-100 mg/dL) or > 60 mg/dL in non-purulent fluid.
Sample Type
Standard
Fasting
No
Unit
mg/dL

In the context of Fluid Biochemical Analysis (e.g., pleural, peritoneal, or pericardial fluid), glucose levels are measured to differentiate between transudates and exudates and to identify specific underlying pathologies. Normally, glucose levels in serous fluids mirror serum levels. However, a decrease in fluid glucose (hypoglycorrachia-like state in serous fluid) suggests increased metabolic activity by bacteria (infection/empyema), malignant cells, or significant synovial/serous inflammation (such as Rheumatoid Arthritis or SLE). It is a critical marker for diagnosing bacterial peritonitis or pleural empyema.

Check Your Result

Check Your Result

Interactive
mg/dL

Enter your lab result to see where you stand compared to the standard reference range.

Why Context Matters

Fluid glucose must be interpreted alongside a simultaneous blood glucose measurement. Factors like systemic hypoglycemia, recent insulin administration, or delay in sample transport (causing ex-vivo glycolysis) can falsely lower results.

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 Fluid Glucose:

Research & Guidelines

Related Indicators

Pleural Fluid ADA Levels

View Range

CSF ADA Levels

View Range

Pandy's Test

View Range
DR

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.

Get Notified When Dr. Babu Is Available