TheBlood Finder - About Blood

Eligibility

Who Can Donate Blood?

Before donating, make sure you meet these basic requirements.

✅

Age 18–65 Years

Donors must be between 18 and 65 years old to be eligible for donation.

⚖️

Weight ≥ 45 kg

Minimum weight of 45 kg is required to safely donate blood.

❤️

Good Health

You must be in good health on the day of donation — no fever, cold or illness.

💉

Hemoglobin ≥ 12.5 g/dL

Minimum hemoglobin level required. This is checked before donation.

❌

Not Pregnant / Breastfeeding

Women who are pregnant or breastfeeding cannot donate blood.

🚫

No Recent Illness

Wait at least 2 weeks after recovery from fever, cold, or infection.

⏳

3 Months Gap Required

Men must wait 3 months, women 4 months between donations.

💊

No Antibiotics Recently

Wait at least 7 days after completing a course of antibiotics.

Blood Types

Know Your Blood Group

Each blood type has unique compatibility. Know who you can donate to and receive from.

🩸

O-

🌟 Universal Donor

Can Give: Everyone

Can Receive: O- only

🩸

O+

✅ Most Common

Can Give: O+, A+, B+, AB+

Can Receive: O+, O-

🩸

A+

✅ Common

Can Give: A+, AB+

Can Receive: A+, A-, O+, O-

🩸

A-

⚠️ Rare

Can Give: A+, A-, AB+, AB-

Can Receive: A-, O-

🩸

B+

✅ Common

Can Give: B+, AB+

Can Receive: B+, B-, O+, O-

🩸

B-

⚠️ Rare

Can Give: B+, B-, AB+, AB-

Can Receive: B-, O-

🩸

AB+

🎯 Universal Receiver

Can Give: AB+ only

Can Receive: Everyone

🩸

AB-

⚠️ Rare

Can Give: AB+, AB-

Can Receive: A-, B-, O-, AB-

Compatibility

Blood Compatibility Chart

✅ = Compatible | ❌ = Not Compatible

Donor →	O-	O+	A-	A+	B-	B+	AB-	AB+
O-	✅	✅	✅	✅	✅	✅	✅	✅
O+	❌	✅	❌	✅	❌	✅	❌	✅
A-	❌	❌	✅	✅	❌	❌	✅	✅
A+	❌	❌	❌	✅	❌	❌	❌	✅
B-	❌	❌	❌	❌	✅	✅	✅	✅
B+	❌	❌	❌	❌	❌	✅	❌	✅
AB-	❌	❌	❌	❌	❌	❌	✅	✅
AB+	❌	❌	❌	❌	❌	❌	❌	✅

Before Donating

Tips for a Successful Donation

Follow these simple steps to have a safe and easy donation experience.

💧

Stay Hydrated

Drink at least 2–3 extra glasses of water before your donation.

🍽️

Eat Well

Have a proper meal 2–3 hours before donating. Avoid fatty foods.

😴

Rest Well

Get a good night's sleep before your donation day.

🚭

No Smoking

Avoid smoking at least 2 hours before and after donation.

🏋️

No Heavy Exercise

Skip intense workouts on the day of donation.

🆔

Carry ID Proof

Bring a valid government ID like Aadhar card to the blood bank.

Donor →	O-	O+	A-	A+	B-	B+	AB-	AB+
O-	✅	✅	✅	✅	✅	✅	✅	✅
O+	❌	✅	❌	✅	❌	✅	❌	✅
A-	❌	❌	✅	✅	❌	❌	✅	✅
A+	❌	❌	❌	✅	❌	❌	❌	✅
B-	❌	❌	❌	❌	✅	✅	✅	✅
B+	❌	❌	❌	❌	❌	✅	❌	✅
AB-	❌	❌	❌	❌	❌	❌	✅	✅
AB+	❌	❌	❌	❌	❌	❌	❌	✅

Donor →	O-	O+	A-	A+	B-	B+	AB-	AB+
O-	✅	✅	✅	✅	✅	✅	✅	✅
O+	❌	✅	❌	✅	❌	✅	❌	✅
A-	❌	❌	✅	✅	❌	❌	✅	✅
A+	❌	❌	❌	✅	❌	❌	❌	✅
B-	❌	❌	❌	❌	✅	✅	✅	✅
B+	❌	❌	❌	❌	❌	✅	❌	✅
AB-	❌	❌	❌	❌	❌	❌	✅	✅
AB+	❌	❌	❌	❌	❌	❌	❌	✅

🩸 About Blood Donation

Age 18–65 Years

Weight ≥ 45 kg

Good Health

Hemoglobin ≥ 12.5 g/dL

Not Pregnant / Breastfeeding

No Recent Illness

3 Months Gap Required

No Antibiotics Recently

Stay Hydrated

Eat Well

Rest Well

No Smoking

No Heavy Exercise

Carry ID Proof

Donor →	O-	O+	A-	A+	B-	B+	AB-	AB+
O-	✅	✅	✅	✅	✅	✅	✅	✅
O+	❌	✅	❌	✅	❌	✅	❌	✅
A-	❌	❌	✅	✅	❌	❌	✅	✅
A+	❌	❌	❌	✅	❌	❌	❌	✅
B-	❌	❌	❌	❌	✅	✅	✅	✅
B+	❌	❌	❌	❌	❌	✅	❌	✅
AB-	❌	❌	❌	❌	❌	❌	✅	✅
AB+	❌	❌	❌	❌	❌	❌	❌	✅