What does an abnormally high red blood cell count mean?
Feb 27, 2023
Source: Cainiu Health
Dr. Zhang Heyang
Introduction
Abnormally elevated red blood cells may be caused by factors such as fasting blood draw, long-term smoking, urinary tract infections, bladder stones, or hyperthyroidism. Patients can receive symptomatic treatment based on the specific underlying cause. Fasting before blood collection usually requires abstaining from food, which may lead to mild dehydration and consequent hemoconcentration. When hemoconcentration occurs, the number of red blood cells appears increased relative to the plasma volume.
In general, abnormally elevated red blood cell counts may be caused by factors such as fasting before blood draw, long-term smoking, urinary tract infections, bladder stones, or hyperthyroidism. Patients can receive symptomatic treatment based on the specific underlying cause. The details are as follows:
1. Fasting before blood draw
Fasting prior to blood collection usually involves abstaining from food, which may lead to mild dehydration and subsequent hemoconcentration. When blood becomes concentrated, the relative number of red blood cells in plasma increases, resulting in a higher red blood cell count. This is a normal physiological response and typically resolves after eating following the blood test.
2. Long-term smoking
Smoking may trigger chronic inflammatory responses, leading to increased white blood cell counts. Elevated white blood cells can stimulate the bone marrow to produce more red blood cells to counteract potential inflammation, thereby increasing red blood cell levels. After quitting smoking, red blood cell counts usually return gradually to normal.
3. Urinary tract infection
If abnormally high red blood cells are found during urinalysis, this may be due to a urinary tract infection. Patients may also experience symptoms such as frequent urination, urgency, and painful urination. Under medical guidance, medications such as metronidazole tablets or levofloxacin tablets may be prescribed for treatment.
4. Bladder stones
If a patient develops hematuria (blood in urine) and pain after physical activity, it could be caused by bladder stones. As stones move, they may cause rupture of capillaries in the mucosal layer. It is recommended to seek hospital evaluation and, under a doctor's supervision, use medications such as Pishi Keli (stone-expelling granules) or Niaoshitong pills to help eliminate the stones.
5. Hyperthyroidism
Unbalanced diet or excessive iodine intake over a long period may lead to overproduction of thyroid hormones, triggering hyperthyroidism. Excess thyroid hormones can stimulate the bone marrow, causing myeloproliferation and consequently abnormally elevated red blood cell counts. Under medical supervision, patients may take medications such as carbimazole tablets or metoprolol tartrate tablets for treatment.
If abnormal blood cell counts occur, prompt medical consultation is recommended. Additionally, patients should drink plenty of water during treatment.
