Updated at: 09-05-2022 - By: Sienna Lewis

How can I reduce my hematocrit so that I can donate plasma? As with low hematocrit levels, a high hematocrit level can be problematic. If you don’t already know, hematocrit is the percentage of red blood cells in your blood.

Our blood contains plasma, which contains white blood cells, platelets, and red blood cells. You have a 45 percent blood component made up of these three elements. As a result, a percentage is assigned to each of them.

Because of this, your platelet levels may be low, but your red blood cell volume may be high, which could signal a variety of disorders. Continue reading to learn more about hematocrit levels and their significance. Let’s get this party started!

What Is a Hematocrit Level?

Simply said, hematocrit is a measurement of how many red blood cells are present in your blood. When it comes to donating blood, for example, a level of 38% is regarded the minimal need.

How To Lower Hematocrit For Plasma Donation? 6 Awesome Ways! - Krostrade

What Is Normal Hematocrit?

The normal hematocrit levels vary according to age and ethnicity. Men’s normal levels range from 41% to 50% in adulthood. 36-44 percent is a more typical range for females: Anemia occurs when a person’s hematocrit level falls below the normal range, indicating that the person lacks red blood cells. Polycythemia or erythrocytosis might be indicated by a higher-than-normal hematocrit level.

Why Should You Test Hematocrit Levels?

Patients with anemia, polycythemia, or erythrocytosis may have hematocrit levels tested by their doctors. Anemia manifests as weariness, shortness of breath, and dizziness, among other things. Fatigue, itching, headaches, and excessive perspiration are all signs of polycythemia. Headaches, dizziness, shortness of breath, and nosebleeds are all symptoms of erythrocytosis, which is an autoimmune disorder.

What Is the Difference Between Hematocrit and Hemoglobin

However, both hematocrit and hemoglobin readings are blood tests, but they’re not testing the same thing.


  • A person’s hemoglobin, or red blood cell count, is known as the hemoglobin equivalence.
  • Men’s normal hematocrit levels fall between 41% and 50%.
  • Women’s normal levels range from 36% to 48%.


  • In order for red blood cells to carry oxygen and carbon dioxide throughout your body, hemoglobin must be present.
  • Men’s hemoglobin levels should be between 13.5 and 17.5 g/dL.
  • 12.0 to 15.5 g/dL is considered normal for women.

Before each blood donation, a hemoglobin test is performed to ensure that the blood is safe. A blood donor’s red blood cell levels must be adequate to donate blood. Blood donors must have hemoglobin levels of at least 12.5 g/dL but no more than 20 g/dL. If you’d want to donate red blood cells alone, you can do so through the Power Red program.

Why Donations Are So Important

There is a need for blood transfusions every two seconds, according to recent studies. There are a wide range of medical conditions that can benefit from blood donations, including trauma, cancer, and chronic sickness.

Learn What The Normal Hematocrit Level Is

Each of these factors affects the normal hematocrit levels. 36-44% is the average for women, while 41% to 50% is typical for males. When a person’s hematocrit is lower than normal, they are said to have anemia, which is a deficiency of red blood cells. Hematocrit levels above the average suggest an overabundance of red blood cells. Polycythemia or erythrocytosis may be to blame.

Why Is It Important To Check Hematocrit Levels?

A hematocrit test may be ordered by your doctor if you show signs of anemia, polycythemia, or erythrocytosis. Shortness of breath, lightheadedness, and exhaustion are all symptoms of anemia. A common symptom of polycythemia is an itchiness and profuse perspiration. Erythrocytosis is characterized by nosebleeds, dizziness, headaches, and shortness of breath, all of which are symptoms of the disease.

Therapeutic Phlebotomy. While reading the 2021 spring nursing… | by Mickael “Sage” GamerTebo | Medium

Ways To Lower Your Hemoracrit Levels

A higher hematocrit level raises your risk of thrombosis, which can lead to a stroke or a heart attack because of the buildup of red blood cells. Preferably, hematocrit levels should be within the range of normal. Consequently, it is imperative that you solve this issue as soon as possible. Hematocrit definition can be found here. Regardless, we’ve compiled a list of all the measures necessary to reduce hematocrit before plasma donation:

#1. Be active

Make sure you gradually and gently engage in physical activity. Do not allow yourself to grow weary when exercising, as the body uses more oxygen from our blood at that point. If you begin to feel dizzy, stop exercising immediately.

#2. Keep hydrated

Dehydration increases plasma and blood volume and raises hematocrit levels when there is insufficient body fluid to dilute it. In order to avoid an increase in your hematocrit levels, it is important to stay hydrated at all times. Increase your fluid intake to avoid dehydration. It is recommended that you drink at least eight glasses of water a day as a minimum.

#3. Try taking aspirin

By diluting the blood, taking an aspirin a few times a month can help avoid blood clots. In addition, aspirin helps to prevent thicker blood, which is caused by high hematocrit levels. It’s fine to take two aspirin a month, but don’t go overboard with this prescription. If you take a lot of aspirin, even little wounds may bleed excessively. Be sure to consult with your physician before beginning any aspirin regimen.

#4. Stop smoking

Tobacco harms blood flow because it affects oxygen-carrying red blood cells. This leads the bone marrow to produce more red blood cells, increasing the hematocrit, which is caused by decreased oxygen levels in the blood.

#5. Change your diet

Your hematocrit can be reduced by making dietary changes that are different from what you’re used to. Here are a few tips to get you started:

Consume more antioxidant-rich foods, which improve your body’s ability to distribute oxygen throughout your body. Antioxidants let oxygen move through the bloodstream more easily. Prunes, cherries, and beans are all strong in antioxidants. A flavonoid called naringin, present in half a grapefruit, was discovered to help the body naturally remove red blood cells, according to a recent study. In order to ensure that your body can produce hemoglobin, it’s essential to avoid foods that are high in iron.

To keep your iron levels in check, limit your intake of high-iron foods like spinach and broccoli. Because they make you pee, diuretics like alcohol and coffee can dehydrate you. Stick to water or unsweetened juices if you wish to lower your hematocrit.

#6. Don’t live in high places

To compensate for the lower oxygen levels, the bone marrow is considered to produce more red blood cells, which raises the hematocrit level in blood. Low-lying areas can help prevent this. These are the things you can take to reduce your hemoglobin concentrations. Check your hematocrit levels if you’re thinking about donating plasma. That’s why medical professionals will examine you first to see if you’re fit to donate. In the event that they uncover anything, they will let you know and provide instructions, so be sure to pay attention to what they say.

What about your blood donation, on the other hand? Read on if you’re interested in learning more about where your donated blood goes. But we hope that you have found our information useful and that we have addressed all of your concerns. I appreciate you taking the time to read this.

Tips to pass the iron test (hematocrit)

Increase your circulation

Even if your iron levels are within the permissible range, a low hematocrit measurement can be caused by poor blood circulation in the hand. Blood flow decreases, resulting in lower measurements. When it’s cold outside, this is a more prevalent issue.

When you arrive at their blood center or mobile donation site, keep your hands warm and run your hands under warm water after filling out the questionnaire to promote circulation.

Add iron-rich foods to your diet

Increased blood flow doesn’t mean you’ll pass the test if you don’t already have enough iron; make sure your levels are within acceptable range before you try this technique. Iron levels can unexpectedly drop, even in long-term donors; this can happen to both men and women, and is very common; on any given day, about one in ten donors is turned away due to an insufficient iron level.

Increase your consumption of iron rich foods, such as red meat and dark leafy greens, starting up to a week prior to donating. Talk to your doctor about taking an iron supplement, but we do not advocate doing so without first consulting a doctor.

A low iron count also doesn’t mean that you are anemic. It’s only if you are at or below 31.5 hematocrit that we recommend that you talk to your doctor — anywhere in the 31.8 – 37.2 hematocrit range is normal but just doesn’t meet our standards.

What is Bloodletting? (with pictures)

Come back again

An iron deficiency does not necessarily mean that you are anemic. The only time we recommend that you see a doctor is if your hematocrit level is below 31.5, which falls within the usual range of 31.8 to 37.2 hematocrit.


How can I reduce my hematocrit so that I can donate plasma? In order to lower your hematocrit levels prior to donation, it is recommended that you stay well hydrated, engage in regular physical activity, avoid meals high in iron, or use aspirin only under the supervision of your physician. For your information, donating blood can help lower hematocrit levels. Donating blood is a great way to get rid of extra iron while also cleansing and revitalizing your body. As a bonus, you can lower your hematocrit levels using this!

That’s all I’ve got for today. “What is a donation?” is the subject of another of our articles, which you can see here. Even if you already know that donating is giving something to someone else with no expectation of receiving anything in return, take a look at the information in this page to learn more. You may also be interested in reading about why my blood donation was denied.