Pre-Donation Checklist
Provide the details below to assess your readiness for blood donation. Always confirm final eligibility with your blood center’s screening staff.
Typical minimum: 12.5 g/dL for females, 13.0 g/dL for males.
Preliminary assessment
Likely eligible
Based on the information provided, you meet common eligibility criteria. Final determination occurs during donor screening at the blood center.
How to Use This Calculator
Enter key screening data
Provide your age, weight, hemoglobin, and basic health information to align with standard donor criteria.
Review any flagged concerns
The calculator highlights possible deferrals (low hemoglobin, recent tattoo, travel) to discuss with donor staff.
Confirm with your blood center
Final eligibility is determined through official screening, medical history, and vital signs on donation day.
Formula
Key thresholds: Age ≥17 yrs (or 16 with consent), Weight ≥50 kg, Hemoglobin ≥12.5 g/dL (female) or 13.0 g/dL (male)
Additional criteria include general wellness and absence of recent high-risk exposures.
Full Description
Blood donor eligibility protects both donors and recipients. While requirements vary by country and blood collection agency, most programs set minimum age, weight, and hemoglobin thresholds, and screen for recent illnesses, medications, travel, and risk behaviors. This calculator provides an initial check, but the donor health questionnaire and medical staff at the center make the final determination.
Frequently Asked Questions
What if my hemoglobin is borderline?
Focus on iron-rich foods and hydration. Blood centers measure hemoglobin onsite; if it remains below threshold, donation will be deferred.
How long after a tattoo can I donate?
Deferral is typically 3 months if performed at a licensed facility. Longer deferrals may apply elsewhere—confirm with your center.
Does medication affect eligibility?
Certain medications (e.g., isotretinoin, anticoagulants) require temporary deferral. List all medications during screening.
Can I donate if I had COVID-19?
Yes, once you are symptom-free and meet recovery time requirements. Follow the latest guidance from your donation center.