What causes high CRP in whole blood?

Generally, elevated CRP levels in whole blood may be caused by factors such as strenuous exercise, pregnancy, acute upper respiratory tract infection, acute bronchitis, or acute pyelonephritis. It is recommended to seek timely medical attention to identify the underlying cause and receive appropriate treatment under a doctor's guidance. Detailed explanations are as follows:

1. Strenuous exercise: Prolonged high-intensity physical activity may cause minor muscle damage and trigger a stress response in the body, temporarily increasing whole blood CRP levels. This is usually not accompanied by other discomforts. After ceasing strenuous exercise, adequate rest should be taken and high-intensity activities should be avoided for a short period. Rechecking CRP levels after 1–2 weeks often shows the indicators have returned to normal.

2. Pregnancy: During pregnancy, the mother's metabolism accelerates and the immune system remains mildly activated, which may lead to a mild increase in whole blood CRP levels. This is considered a physiological change. Regular prenatal checkups should be conducted to monitor CRP and other indicators. A balanced diet rich in sufficient protein and vitamins should be maintained, and excessive fatigue should be avoided.

3. Acute upper respiratory tract infection: Often caused by viral or bacterial infections, inflammation may elevate whole blood CRP levels, commonly accompanied by symptoms such as sore throat, nasal congestion, and runny nose. Patients may take medications such as acetaminophen tablets, ibuprofen sustained-release capsules, or Lianhua Qingwen capsules as directed by a physician to alleviate symptoms. Additionally, drinking plenty of warm water and maintaining indoor ventilation are recommended.

4. Acute bronchitis: Inflammation of the bronchial mucosa caused by bacterial or viral infection can elevate whole blood CRP levels, presenting symptoms such as coughing, phlegm production, and chest tightness. Patients should take medications such as amoxicillin capsules, cefuroxime axetil tablets, or ambroxol hydrochloride oral solution as directed by a physician. Inhalation of irritant gases should be avoided, and keeping warm is important.

5. Acute pyelonephritis: Bacterial infection of the renal pelvis and kidney tissue causes inflammation, significantly elevating whole blood CRP levels, accompanied by symptoms such as back pain, frequent urination, urgency, and fever. Patients may take medications such as levofloxacin tablets, cefixime dispersible tablets, or sodium bicarbonate tablets as directed by a physician to control the infection. Increasing water intake to promote urination helps flush the urinary tract.

In daily life, a light diet should be maintained, avoiding spicy and irritating foods. Maintaining regular作息 (作息 should be translated as "作息" in English, but here it refers to maintaining regular作息 habits, so it should be translated as "habits" or "routine") routines, avoiding staying up late, and engaging in mild exercises such as walking can enhance physical resistance and help maintain stable indicators.