blood type O- What this means?

Discussion in 'Biology & Genetics' started by skaught, Apr 9, 2008.

  1. skaught The field its covered in blood Valued Senior Member

    Which do you have, alpha beta or delta?
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  3. ElectricFetus Sanity going, going, gone Valued Senior Member

    its Beta, Hunter.
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  5. S.A.M. uniquely dreadful Valued Senior Member

    If you introduce the concept would it be too much to provide an explanation?
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  7. skaught The field its covered in blood Valued Senior Member

    Chill, she's just encouraging me to educate myself!
  8. joepistole Deacon Blues Valued Senior Member

    U.S. Blood-type Distribution
    38 percent of population
    34 percent of population
    9 percent of population
    7 percent of population
    6 percent of population
    3 percent of population
    2 percent of population
    1 percent of population

    ABO and Rh blood type distribution by nation (averages for each population) Country O+ A+ B+ AB+ O− A− B− AB−
    Austria[13] 30% 33% 12% 6% 7% 8% 3% 1%
    Australia[14] 40% 31% 8% 2% 9% 7% 2% 1%
    Belgium[15] 38.1% 34% 8.5% 4.1% 7% 6% 1.5% 0.8%
    Canada[16] 39% 36% 7.6% 2.5% 7% 7% 1.4% 0.5%
    Denmark[17] 35% 37% 8% 4% 6% 7% 2% 1%
    Finland[18] 27% 38% 15% 7% 4% 6% 2% 1%
    France[19] 36% 37% 9% 3% 6% 7% 1% 1%
    Germany[20] 35% 37% 9% 4% 6% 6% 2% 1%
    Hong Kong, China[21] 40% 26% 27% 7% <0.3% <0.3% <0.3% <0.3%
    Ireland[22] 47% 26% 9% 2% 8% 5% 2% 1%
    Korea, South[23] 27.4% 34.4% 26.8% 11.2% 0.1% 0.1% 0.1% 0.05%
    Netherlands[24] 39.5% 35% 6.7% 2.5% 7.5% 7% 1.3% 0.5%
    New Zealand[25] 38% 32% 9% 3% 9% 6% 2% 1%
    Poland[26] 31% 32% 15% 7% 6% 6% 2% 1%
    Sweden[27] 32% 37% 10% 5% 6% 7% 2% 1%
    UK[28] 37% 35% 8% 3% 7% 7% 2% 1%
    USA[29] 37.4% 35.7% 8.5% 3.4% 6.6% 6.3% 1.5% 0.6%
    Last edited: Apr 10, 2008
  9. iceaura Valued Senior Member

    Maybe someone here can answer a question of mine:

    I have been a fairly regular blood donor all my life, until recent years when it was no longer possible to do so anonymously (it used to be easier to lie). I am O+.

    The reason I don't want to go on file is because of the screening tests for the blood. I have essentially no risk factors for hepatitis, HIV, etc, but I do risk false positive results on the screening tests if they are on some kind of permanent file that I cannot correct (which they would be).

    As someone with erratic health insurance coverage in the US, I cannot afford to turn up on file with a "pre-existing condition" of that kind. I would never be able to change jobs again.

    I still donate, occasionally, but with reluctance.

    Now the question: what are the lifetime odds of a false positive on one of the screens, for someone donating blood two or three times year for, say, forty years ?

    I have not been able to get a straight answer from anyone in the Red Cross, literature searches (I got curious about it) have turned up only a pile of the basic data that someone with better statistical training than I have might be able to get a guesstimate out of, etc.

    { Random factoids encountered:

    old blood - yours that you store for yourself included - probably does not work as well as freshly donated blood. Higher rates of clotting and other surgical complications are associated with longer storage times for transfused blood

    and blood donation is probably good for you, the donor, if you are male and older than about 30 and not anemic or vegetarian. It's probably been a while since you bled seriously, true? Your body is set up to bleed on occasion - it's like losing a bit of weight, eating rough food for a while, swimming in cold water - invigorating.
  10. clusteringflux Version 1. OH! Valued Senior Member

    Thanks, Ice. Helpful stuff.
  11. ElectricFetus Sanity going, going, gone Valued Senior Member

    When are we just going to manufacture human blood in hybridized or xenotransplatable pigs? Just have a pharm behind the hospital, when they need blood just drain it out of the donor pig.
  12. CharonZ Registered Senior Member

    Well, the false-positive rate depends quite a bit on the method they use, your condition and sometimes even something as mundane as misinterpretation. In
    this study:Kleinman S, Busch MP, Hall L, Thomson R, Glynn S, Gallahan D, Ownby HE, Williams AE.1998: False-positive HIV-1 test results in a low-risk screening setting of voluntary blood donation. Retrovirus Epidemiology Donor Study.
    I found an average value of 0.0004% false positives. So if you got tested altogether 120 times your cumulative chance would be 0.048%.
  13. Orleander OH JOY!!!! Valued Senior Member

    Are certain blood types strictly Europen? I mean were all blood types in Africa, Asia, and the Americas before the Europeans settled there?

    I'm A+
  14. S.A.M. uniquely dreadful Valued Senior Member

  15. iceaura Valued Senior Member

    I got that far. The nagging worries I'm having come from

    1) underreporting of false positives in the real world situations

    2) the use by the Red Cross and other blood screeners of increasingly more conservative tests and criteria (with higher false positive rates than "average") because their primary responsibility is protection of the blood supply rather than accurate diagnosis

    3) That's just one of the screens, and possibly one with a lower false positive rate (the consequences of false positive reports to the donor being fairly dramatic, in potential). There are even occasional batches of research screens - I recall one of my donations was going to be checked for well over a dozen disease-related features

    4) It's hard to tell if all these screens are independent of each other, of donor characteristics, of site and circumstance of donation, etc.

    It's not that I need some kind of precise, tits on, customized risk assessment - just a ballpark evaluation so I can sort of weigh the chances I'm taking here (along with the "nerve damage through bad needle insertion" risk, the "getting hit by a car in the parking lot while light-headed" risk, the "tooth decay through excessive indulgence in Lorna Doone shortbreads at the recovery table risk" and so forth)

    Once they started keeping the kinds of records they keep, the system was set up to allow carelessness with my life.
    Last edited: Apr 11, 2008
  16. joepistole Deacon Blues Valued Senior Member

    The answer is no. Some races are more likely to have some blood types than others. Please see my previous post and url to sites that give blood types by races.
  17. phlogistician Banned Banned

    Used to, I've given about 15 pints, but have lapsed recently. I keep meaning to go back and donate again, I've no excuse, I'm fit and healthy and suffer no side effects.

    I started giving blood for two reasons, first the obvious, community spirit and saving lives, but more importantly, saving mine; one of the major causes of death in accidents is going into shock after blood loss. If you can condition yourself to blood loss via blood donation, you are less likely to go into shock if you lose a bit more. Personally, I used to get a nice 'ahhhh' feeling when I donated, as my BP lowered a little, but that stopped, and by the end, I didn't feel any different.

    There are also valuable psychological reasons to give blood. If you have ever injured yourself and lost blood (what can I say, I'm active, adventurous and well, unlucky!) you'll know a little goes a long way when it comes to staining clothes, and mixed with sweat, you'd swear you were on the verge of death after losing far less than a pint. If you know you can lose a pint and not suffer, and realise how far a pint would go (just pour a pint of milk over yourself (not water, you need something opaque to get the full effect!) and see what a mess you'd look if it were blood, and understand that while looking pretty awful, you are in no immediate danger, you can concentrate on other things, like preventing further loss and getting to safety.

    PS, I'm AB+ quite rare!
  18. phlogistician Banned Banned


    Mr Pistole, is it true that dwarfs all have type O blood?
  19. shorty_37 Go! Canada Go! Registered Senior Member

    Hey I am not quite a dwarf

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    That is good you donated blood. I have to get on that, esp since my blood is needed so badly.
    Last edited: Apr 11, 2008
  20. Reiku Banned Banned

    Don't know what my type is... hum...
  21. phlogistician Banned Banned

    If I understand it right the genetic markers that have to be passed on to give someone achondroplasia also imply inheriting type O blood, ... but I might not be remembering it correctly. All I really remember from biology is that all tortoiseshell cats are female!
  22. Orleander OH JOY!!!! Valued Senior Member


    yeah, that's how it is now. How was it before Europeans went everywhere?

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    For example, were there any B- people here in America before Europeans landed?
  23. rainbowchick Registered Member

    Sadly no :/

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