# Blood Grouping- Everthing you need to know

**URL:** <https://www.medboundhub.com/t/blood-grouping-everthing-you-need-to-know/15088>\
**Category:** General\
**Tags:** science, information, donation, blood-group, medical\
**Created:** [February 25, 2026, 8:04pm UTC](https://www.medboundhub.com/t/blood-grouping-everthing-you-need-to-know/15088 "2026-02-25T20:04:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Kavishri17](https://yyz1.discourse-cdn.com/flex033/user_avatar/www.medboundhub.com/kavishri17/32/3093_2.png) [@Kavishri17](https://www.medboundhub.com/u/Kavishri17)\
**Post date:** [February 25, 2026, 8:04pm UTC](https://www.medboundhub.com/t/blood-grouping-everthing-you-need-to-know/15088/1 "2026-02-25T20:04:15Z")

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Blood groups are classifications of blood based on the presence of inheritens antigenic substance in our blood

| Blood Group | Antigen on RBC | Antibody in Plasma |
| --- | --- | --- |
| A | A | Anti-B |
| B | B | Anti-A |
| AB | A + B | None |
| O | None | Anti-A + Anti-B |

O-ve is universal donor

AB is universal plasma donor

 ![image](https://canada1.discourse-cdn.com/flex033/uploads/medbound/original/2X/0/07e62ab6bfa074176ac4b7ea0bf7325eb0eebfd0.png)

**Rh Type and its incompatibility in Pregnancy**

Rh type is an inherited protein ( D antigen) on RBC, designated as +ve if present and – ve if absent,its crucial as Rh-ve individuals can develop antibodies to Rh +ve blood  
 ![image](https://canada1.discourse-cdn.com/flex033/uploads/medbound/optimized/2X/6/6cb214eaa1ad2a8ee0dd3005ab35d1ce2e6e24b6_2_690x63.png)

- First pregnancy is usually **safe**
- During delivery, abortion or trauma, fatal blood enters mother
- Then mother forms **anti-D antibodies**
- Next Rh⁺ pregnancy, where antibodies cross placenta
- Baby develops **Hemolytic Disease of the Newborn (HDN).**

**Anti-D Injection** -A life saver in critical Rh blood group incidences:

It is given during following conditions

- 28weeks of pregnancy
- Within 72 hrs after delivery
- After abortion / ectopic / trauma

It usually do not harm the baby, it protects future babies

Blood group Testing in Pregnancy

- ABO & Rh typing {during first visit}
- Indirect Coombs test (antibody screen)
- Repeat antibody testing if Rh⁻
- Fetal monitoring if antibodies detected.

All blood looks the same but the science behind them is deeper.

Is blood donation safe? How often a person can donate blood?

MBH/PS

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**Author:** ![Yaazhini\_2009](https://yyz1.discourse-cdn.com/flex033/user_avatar/www.medboundhub.com/yaazhini_2009/32/3231_2.png) [@Yaazhini\_2009](https://www.medboundhub.com/u/Yaazhini_2009)\
**Post date:** [February 26, 2026, 7:16am UTC](https://www.medboundhub.com/t/blood-grouping-everthing-you-need-to-know/15088/2 "2026-02-26T07:16:57Z")

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The role of routine blood group testing and antibody screening during pregnancy is often underestimated. Important awareness post.

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**Author:** ![swapnapatki](https://yyz1.discourse-cdn.com/flex033/user_avatar/www.medboundhub.com/swapnapatki/32/3377_2.png) [@swapnapatki](https://www.medboundhub.com/u/swapnapatki)\
**Post date:** [February 26, 2026, 8:12am UTC](https://www.medboundhub.com/t/blood-grouping-everthing-you-need-to-know/15088/3 "2026-02-26T08:12:17Z")

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Informative post

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**Author:** ![Brunda](https://yyz1.discourse-cdn.com/flex033/user_avatar/www.medboundhub.com/brunda/32/3221_2.png) [@Brunda](https://www.medboundhub.com/u/Brunda)\
**Post date:** [February 26, 2026, 8:21am UTC](https://www.medboundhub.com/t/blood-grouping-everthing-you-need-to-know/15088/4 "2026-02-26T08:21:53Z")

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Content is very nicely explained