how do you know your blood type if...

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Veteran Member

Date Joined Jan 2006
Total Posts : 3141
   Posted 10/23/2007 8:56 AM (GMT -7)   
you've never given blood, never were transfused and no one has ever told you what your type is.  This may sound silly coming from someone who has paid attention to her meds and care pretty carefully.  But, I just never knew what my blood type was.  My parents were not the best record keepers. The only surgery I ever had that could have been a threat to my blood supply was an emergent surgery so it was not something I checked in advance.
We did a check in high school biology (oh so many years ago) and I was O+.  But  how accurate could that have been considering no one was taking the class that seriously back then.
So is it a lab test that my doc does, can he just do it in his office?  How do I find out?
Dx'd '90 (emergency rupture), symptoms ignored long before that, '03 fistulas and bad flagyl reactions, B12 weekly, Pentasa [until I surrender to the bigger meds]
I'm riding on the escalator of life....

Elite Member

Date Joined Feb 2004
Total Posts : 20577
   Posted 10/23/2007 8:57 AM (GMT -7)   
Talk to your doc, he can help you.

My bum is broken....there's a big crack down the middle of it!  LOL  :)

Regular Member

Date Joined May 2006
Total Posts : 167
   Posted 10/23/2007 9:58 AM (GMT -7)   
The doc can tell you if you ask, oddly mine won't tell me, i'll ask my GI doc next time, maybe he will.
If he doesn't ithen 'm an alien, I knew it! ;)
DX with CD May 2006 @ age 22
Tried Pentasa and Entocort, worked for a yr and a bit
Now on prednisone 37.5mg and having some side effects, "..time goes by so slowly..."
"We're always here for you if you need to talk!"

Veteran Member

Date Joined Jan 2004
Total Posts : 598
   Posted 10/23/2007 10:53 AM (GMT -7)   
Your doctor could order the blood test to satisfy your curiousity but you might have to pay for it since it might not be medically necessary. You don't have to worry about not knowing it though because if you ever needed blood they would retype you at the time of the crossmatch for the blood transfusion. They would not believe a blood type done at any other time, even in their own records. A "Type and Rh" plus antibody screen is part of any routine crossmatch procedure. If there was no time for a blood type (which takes just a few minutes) they would give you Type O RH negative blood and do a type as soon as possible so they didn't waste their supply of O Neg blood. Then they would give you type specific blood and continue with the crossmatch procedure which doesn't take that long either. There are some technical considerations should you have antibodies (from earlier transfusions or pregnancy) but basically this is what would happen. An antibody screen has to be done at the time also regardless of previous screens.
Hope this helps
10 years, many tests, 3 gi doctors, Pentasa 1000mg 3x day
diovan, simvastatin and now trying good ol' zoloft

Veteran Member

Date Joined Feb 2007
Total Posts : 1010
   Posted 10/23/2007 1:24 PM (GMT -7)   
If you had surgery, your blood type is somewhere in your record. Check with the institution where your surgery was performed. Also, if you have ever had a baby, you will have had pre-natal screening for the Rh factor, so your blood type would also be on file as a result of that.

30+ years living with Crohn's.

Veteran Member

Date Joined Sep 2006
Total Posts : 2527
   Posted 10/23/2007 3:11 PM (GMT -7)   
they did a blood type on me before I went in for my last surgery even tho I knew I am A+ since they had no record at that hospital they had to retype me
Dx with Crohn's 1987, symptoms as early as 1984.
Temp iliostomy February 2007, reversed June 2007, Ovarian cysts, migraines, allergies (incl food allergies) , oral allergy syndrome (diff than true food allergies), Asthma, Gall Bladder removed 1999, Inguenal hernia 1987

Veteran Member

Date Joined Mar 2005
Total Posts : 4305
   Posted 10/23/2007 7:02 PM (GMT -7)   
My blood type is O+

Veteran Member

Date Joined Feb 2004
Total Posts : 6518
   Posted 10/24/2007 5:40 AM (GMT -7)   
I think I have the RED type. Not to worry, no blue blood here. I was lucky enough to become 18 years old in the 60s. Old Uncle Sam did my blood type for free and gave me a little set of dog tags with my name, and blood type right on them. Now I can look at them any time and not only recall my blood type, but find out who the heck I am too. Even though this was a free deal, I cant recommend it. I had to spend several years in a place where lots of people were doing all they could every day just to see if I had the RED type..
If we would read the secret history of our enemies,we would find in each mans life sorrow and suffering enough to disarm all hostility.

Veteran Member

Date Joined Oct 2004
Total Posts : 2088
   Posted 10/25/2007 5:22 PM (GMT -7)   
Sounds like a very "negative" Rhesus experience, Sniper. yeah I'll bet they felt real clots when you got your revenge though.... tongue

Veteran Member

Date Joined Mar 2006
Total Posts : 2739
   Posted 10/25/2007 10:00 PM (GMT -7)   
I had a blood test done as a teen before a surgery and they told me, I'm A-. I think it's good to know (especially since we can have emergencies that may require transfusion). I'd talk to your doc for sure.
Diagnosed with mild Crohn's Disease 2/06 after sever GI bleed. Has been suffering since 1998. History of rectal fistula and gallbladder removal. Currently taking Asacol and Questran.

Veteran Member

Date Joined Jan 2004
Total Posts : 598
   Posted 10/26/2007 2:42 AM (GMT -7)   
They would never transfuse you without typing you first, unless it was O RH Neg blood in an emergency. Giving you the wrong blood type would be a disaster in many cases. They will often type you and do an antibody screen in preparation for surgery. The antibody screen is good for about 72 hours. I'm not sure why they type ahead of time - perhaps to be sure there are no problems- because they would always repeat the type when doing the crossmatch.
10 years, many tests, 3 gi doctors, Pentasa 1000mg 3x day
diovan, simvastatin and now trying good ol' zoloft

Veteran Member

Date Joined May 2007
Total Posts : 1488
   Posted 10/26/2007 6:58 AM (GMT -7)   
definetly 0+ DUKE BLUE blood here! Good post(s) rootsmith.
Dx'd Jan'06, 1st Resection 7/06, Predinsone, Humira, Imuran, B12 injections, Nexium. Secondary conditions: Psorasis, Acne, Fatigue, Joint Pain, Lactose Intolerant, gallstones, fibroid cysts, peri-menopausal.

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