Results 1 to 12 of 12
Like Tree17Likes
  • 1 Post By Fireguy1990
  • 1 Post By Cylon357
  • 2 Post By Cuz
  • 1 Post By almostgone
  • 1 Post By < <Samson> >
  • 2 Post By Cuz
  • 1 Post By clarky.
  • 4 Post By almostgone
  • 1 Post By almostgone
  • 3 Post By Cuz

Thread: Donate blood before blood work?

  1. #1
    Fireguy1990 is offline Junior Member
    Join Date
    Oct 2019
    Posts
    83

    Donate blood before blood work?

    Going to get blood work done for Dr and havnt donated blood in a while way past overdue so red blood count is def up there.

    Should I donate before hand or just get my levels checked and then donate.
    davimeireles likes this.

  2. #2
    Cylon357's Avatar
    Cylon357 is online now Member
    Join Date
    Nov 2018
    Location
    AKA "Nice Guy Cy"
    Posts
    599
    Blog Entries
    1
    Depends on how you think your doctor will respond.

    If they are going to flip out and tell you to lower your dose, then donate before hand.

    If they are likely to look at your numbers and say something like "you need to donate some blood", then it can wait until after.

    I'm not sure that I would donate too soon before blood work. Blood work doesn't take much blood, but if you donated the day before, I guess you could end up woozy? I'm not 100% on this, just something to think about.
    davimeireles likes this.

  3. #3
    Cuz's Avatar
    Cuz
    Cuz is offline Knowledgeable Member
    Join Date
    May 2013
    Location
    No source checks
    Posts
    6,650
    Before hand
    Chark and davimeireles like this.

  4. #4
    almostgone's Avatar
    almostgone is offline AR-Platinum Elite- Hall of Famer
    Join Date
    Jun 2004
    Location
    the lower carolina
    Posts
    24,617
    If this is for TRT labs, pull your own CBC and see where your levels are.
    Find a friendly phlebotomist/phlebotomy student if Hct is high, have them help you drain some blood.
    Stay hydrated, pull self-ordered CBC again to see where you're at.

    All the above is if your Dr. is relatively strict regarding labwork.
    davimeireles likes this.
    There are 3 loves in my life: my wife, my English mastiffs, and my weightlifting....Man, my wife gets really pissed when I get the 3 confused...
    A minimum of 100 posts and 45 days membership required for source checks. Source checks are performed at my discretion.

  5. #5
    < <Samson> >'s Avatar
    < <Samson> > is offline Neurologically Intact
    Join Date
    Feb 2012
    Location
    AZ Side
    Posts
    12,169
    Blog Entries
    2
    Just depends on who's looking


    My neurosurgical team can give a two shits less


    My PCP hasn't requested any - I run self prescribed trr, so I can give two fucks less myself
    davimeireles likes this.

  6. #6
    Cuz's Avatar
    Cuz
    Cuz is offline Knowledgeable Member
    Join Date
    May 2013
    Location
    No source checks
    Posts
    6,650
    My appointment with my trt doc is the 20th, i donated yesterday. I was 18.0, on a trt dose. No blasts. Other than a handful of pre workout dbols that dont do anything other than give a good pump it was just test making my blood rise that high man i was like damn ok then. Should be good to go for my doc now

  7. #7
    clarky. is offline MONITOR
    Join Date
    Sep 2012
    Location
    Scotland
    Posts
    16,647
    Quote Originally Posted by Fireguy1990 View Post
    Going to get blood work done for Dr and havnt donated blood in a while way past overdue so red blood count is def up there.

    Should I donate before hand or just get my levels checked and then donate.
    What blood work are you getting done for your Dr ? Why do you automatically think you RBC is high just because you have not donated.

    If you are running test then donating is not going to do nothing for your labs.
    davimeireles likes this.

  8. #8
    Huher is online now Associate Member
    Join Date
    Dec 2017
    Posts
    187
    Why do you think your RBC is high? According to studies there is no evidence that giving blood reduces RBC or Hgb.

  9. #9
    almostgone's Avatar
    almostgone is offline AR-Platinum Elite- Hall of Famer
    Join Date
    Jun 2004
    Location
    the lower carolina
    Posts
    24,617
    Quote Originally Posted by Huher View Post
    Why do you think your RBC is high? According to studies there is no evidence that giving blood reduces RBC or Hgb.
    Incorrect. Donating whole blood or a double red removes red blood cells from the total volume of blood. It is impossible to remove RBC without lowering Hct.

    Why do you think they have a procedure called a "therapeutic phlebotomy"?

    Just from personal experience and years...may as well say over a decade, one unit of whole blood donated lowers my Hct by ~ 1% when I pull the panel the next day. A double red generally gets me ~3%>

    You can't remove red blood cells without lowering hematocrit. What is hematocrit. It's the % of your blood that is RBC....some prefer the term "packed cell volume".
    There are 3 loves in my life: my wife, my English mastiffs, and my weightlifting....Man, my wife gets really pissed when I get the 3 confused...
    A minimum of 100 posts and 45 days membership required for source checks. Source checks are performed at my discretion.

  10. #10
    almostgone's Avatar
    almostgone is offline AR-Platinum Elite- Hall of Famer
    Join Date
    Jun 2004
    Location
    the lower carolina
    Posts
    24,617
    Here's a whole study dedicated to showing how much of an effect repeated donations have on various blood parameters:

    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5118378/




    Maximal power output, peak oxygen consumption, and hemoglobin mass decreased (p < 0.001) up to 4 weeks after a single blood donation with a maximal decrease of 4, 10, and 7%, respectively. Hematocrit, hemoglobin concentration, ferritin, and red blood cell count (RBC), all key hematological parameters for oxygen transport, were lowered by a single donation (p < 0.001) and cumulatively further affected by the repetition of the donations (p < 0.001). The maximal decrease after a blood donation was 11% for hematocrit, 10% for hemoglobin concentration, 50% for ferritin, and 12% for RBC (p < 0.001).



    Edit: You can donate too often, as well. You can see how much repeated donations nailed ferritin, lowered RBC as well.

    That just how these things work.
    Last edited by almostgone; 12-11-2021 at 01:48 AM.
    SampsonandDelilah likes this.
    There are 3 loves in my life: my wife, my English mastiffs, and my weightlifting....Man, my wife gets really pissed when I get the 3 confused...
    A minimum of 100 posts and 45 days membership required for source checks. Source checks are performed at my discretion.

  11. #11
    Cuz's Avatar
    Cuz
    Cuz is offline Knowledgeable Member
    Join Date
    May 2013
    Location
    No source checks
    Posts
    6,650
    Quote Originally Posted by almostgone View Post
    Incorrect. Donating whole blood or a double red removes red blood cells from the total volume of blood. It is impossible to remove RBC without lowering Hct.

    Why do you think they have a procedure called a "therapeutic phlebotomy"?

    Just from personal experience and years...may as well say over a decade, one unit of whole blood donated lowers my Hct by ~ 1% when I pull the panel the next day. A double red generally gets me ~3%>

    You can't remove red blood cells without lowering hematocrit. What is hematocrit. It's the % of your blood that is RBC....some prefer the term "packed cell volume".
    ^^^ This

    Its amazing how keeping your blood healthy will positively effect your overall health

  12. #12
    clarky. is offline MONITOR
    Join Date
    Sep 2012
    Location
    Scotland
    Posts
    16,647
    Quote Originally Posted by Cuz View Post
    ^^^ This

    Its amazing how keeping your blood healthy will positively effect your overall health
    Very healthy, i was assuming it was for test ect.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •