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Calcimator

Blood Donation Eligibility Estimator

Educational score based on hemoglobin, age, and recent travel -- always confirm with your local blood center.

Inputs

Results

Eligibility score

90 / 100

NoteScreening rules vary by country and blood center
How to Use This Calculator
  1. Enter your hemoglobin level in g/dL — if unknown, leave the default of 14.2.
  2. Enter your age in years; donors must typically be between 16 and 65.
  3. Select whether you have traveled to a malaria-endemic region in the past 12 months.
  4. Review the Eligibility Score (0–100) and the accompanying note about deferral risk.
  5. Always confirm eligibility with your local blood donation center before donating.

What each input means

Hemoglobin g/dL
Your hemoglobin level from a recent blood test. Most centers require at least 12.5 g/dL.
Age
Your current age. Most blood centers accept donors between 18 and 65.
Malaria-endemic travel (12 mo)?
Select Yes if you traveled to a malaria-risk area in the past 12 months. Many centers impose a deferral period.

What each result means

Eligibility score
Higher scores suggest better eligibility. This is educational only -- not an official screening.
Note
Contextual guidance based on your inputs.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Hemoglobin g/dL = 14.2, Age = 30, Malaria-endemic travel (12 mo)? = 0 = 3 input(s) provided
  2. Calculate Eligibility score
    Eligibility score = 50
    90 = 90
  3. Calculate Note
    Screening rules vary by country and blood center = Screening rules vary by country and blood center

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