1. What is the Age-Adjusted ESR Formula?

The age-adjusted ESR (Erythrocyte Sedimentation Rate) formula calculates the expected normal ESR for women based on their age. This helps in interpreting ESR results in clinical contexts.

2. How Does the Calculator Work?

The calculator uses the age-adjusted ESR formula:

Where:

• \( Age \) — Patient's age in years

Explanation: The formula provides an estimate of the upper limit of normal ESR for women, which increases with age.

3. Importance of ESR Calculation

Details: ESR is a non-specific marker of inflammation. Age-adjusted values help distinguish normal age-related changes from pathological inflammation.

4. Using the Calculator

Tips: Enter the patient's age in years. The value must be valid (between 1-120 years).

5. Frequently Asked Questions (FAQ)

Q1: Is this formula applicable to men?
A: No, this specific formula is for women only. Men typically have lower normal ESR values.

Q2: What are normal ESR values?
A: For women, normal is approximately (Age + 10)/2 mm/hr. For men, normal is typically about Age/2 mm/hr.

Q3: When is ESR testing indicated?
A: ESR is useful for monitoring inflammatory conditions like temporal arteritis, polymyalgia rheumatica, and some infections.

Q4: What factors can affect ESR?
A: Anemia increases ESR, while polycythemia and microcytosis may decrease it. ESR also rises normally with age.

Q5: How does this compare to CRP?
A: CRP is more sensitive for acute inflammation, while ESR better reflects chronic inflammation and is affected by more variables.