Can I donate blood with a blood pressure of 148-96 mmHg?

Jun 20, 2025 Source: Cainiu Health

Dr. Liu Feng

Introduction

Normal blood donation requires systolic blood pressure ≤140 mmHg and diastolic blood pressure ≤90 mmHg. A reading of 148/96 mmHg exceeds the normal range and falls into the category of hypertension. Blood donation under such conditions may lead to blood volume reduction, which can cause blood pressure fluctuations and increase the likelihood of symptoms such as dizziness and chest tightness. In severe cases, it may trigger cardiovascular or cerebrovascular accidents, posing a risk to the donor's health.

　　Blood pressure of 148/96 mmHg is not eligible for blood donation, as the blood pressure has not been controlled within the normal range, and donating blood may pose health risks. The detailed explanation is as follows:

　　Normal blood donation requires systolic blood pressure ≤140 mmHg and diastolic blood pressure ≤90 mmHg. A reading of 148/96 mmHg exceeds the normal range and falls into the category of hypertension. At this level, donating blood may cause a reduction in blood volume, leading to blood pressure fluctuations and increasing the likelihood of experiencing symptoms such as dizziness and chest tightness. In severe cases, it may even trigger cardiovascular or cerebrovascular accidents, which are detrimental to the donor's health.

　　Additionally, elevated blood pressure might indicate underlying vascular conditions or other health issues. Donating blood without identifying the cause or effectively controlling the blood pressure could not only compromise the quality of donated blood but also potentially mask the underlying condition, affecting subsequent health evaluations. Blood banks prohibit individuals whose blood pressure does not meet the criteria from donating blood to ensure the safety of both donors and recipients.

　　Individuals with a blood pressure of 148/96 mmHg should first work to control their blood pressure through lifestyle modifications or medical treatment as directed by a physician. Once blood pressure has stabilized below 140/90 mmHg, they should truthfully inform blood bank staff of their blood pressure levels and control history, allowing professionals to assess whether they are suitable for blood donation. Do not attempt to donate blood before achieving the required blood pressure standards.

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Is blood donation beneficial for people with high blood pressure?

Under normal circumstances, if a person with high blood pressure has their blood pressure well-controlled in daily life, donating blood appropriately may provide certain benefits. However, if their blood pressure is not well-managed, donating blood at such times would not be beneficial. If any discomfort symptoms arise, it is recommended to seek timely medical consultation and treatment at a正规 hospital. Before donating blood, it is essential to consult with a qualified physician to confirm whether your health condition is suitable for blood donation.

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Can patients with rhinitis donate blood after taking medication?

If rhinitis is in a stable phase with mild symptoms, and only nasal corticosteroids or antihistamine local medications are being used, and there is no systemic discomfort such as fever or fatigue, and no recent use of medications affecting coagulation function or the immune system, then the body's physiological functions are normal. In this case, the body can self-regulate after blood donation, and donation will not cause any significant health impact or exacerbate symptoms of rhinitis.

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Can I donate blood if I have high triglycerides?

If triglyceride levels are only slightly above the normal range, and there are no other health conditions such as hypertension or diabetes, and if other blood parameters meet the required standards as determined by pre-donation screening, donating blood typically will not have a significant impact on one's health. The donated blood may also meet clinical usage requirements. In such cases, following moderate blood donation, the body can maintain stable blood composition through self-regulation.

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How long after donating blood can I take a shower?

Under normal circumstances, you can take a shower 1-2 days after blood donation. After donating blood, it is important to get plenty of rest and avoid strenuous exercise and heavy physical labor, allowing your body sufficient time to recover. Nutritionally, you should maintain a balanced diet with foods rich in protein, iron, vitamins, and other essential nutrients, such as lean meat, eggs, milk, spinach, and similar items.