c-reactive protein elevation

Resources

• neutrophil to lymphocyte ratio info

• Triglyceride to HDL ratio relationship with cardiovascular health

• HOMA-IR insulin resistance score info

• a1c conversion calculator to estimated average glucose

• cardio IQ advanced lipid panel testing

• celiac testing

• CRP and endometriosis

• USPSTF cancer screening guidelines and recommendations

AI generated summary of my audio

What CRP Is & Why It’s Used

• C-reactive protein (CRP) = liver-derived acute phase reactant

• General marker of systemic inflammation

• Routinely screened due to:

  • Good insurance coverage (including Medicaid)

  • Usefulness in cardiovascular risk, metabolic syndrome, and insulin resistance

• Best used as a trend over time, not a standalone diagnosis

CRP Testing & Interpretation

• High-sensitivity CRP (hs-CRP) used for screening and monitoring

• Interpretation:

  • < 1.0 mg/L → optimal

  • 1–3 mg/L → mild inflammation

  • more than 5 mg/L → shift from screening to diagnostic evaluation

• hs-CRP is most useful when CRP is between 1–5

• CRP >5 suggests active inflammation, not just cardiovascular risk

Initial Follow-Up Labs When CRP Is Elevated

• ESR (sed rate) – broader inflammation marker

• CBC

  • Total white blood cell count

  • Neutrophil-to-lymphocyte ratio (NLR)

• Dental health review (chronic oral infections can elevate CRP)

Liver & Metabolic Contributors to Elevated CRP

• Liver enzymes:

  • AST & ALT (goal <30; <20 ideal)

  • GGT (toxic/metabolic liver stress, alcohol exposure)

• Blood sugar & insulin resistance:

  • A1C (goal ~5.0 and less than 5.7%)

  • Fasting insulin and fasting glucose → HOMA-IR (goal <2)

• Lipid ratios:

  • Triglycerides : HDL (goal <1, lower the better)

• Fatty liver and metabolic syndrome are common CRP drivers

Iron & Inflammation

• Ferritin

  • Acts as both iron storage and inflammation marker

  • High ferritin can reflect liver inflammation

• Consider iron panel (serum iron, TIBC) if ferritin is abnormal or confusing

Common Causes of Persistent CRP Elevation Include

• Metabolic dysfunction

• Liver inflammation

• Insulin resistance

• Chronic dental issues

• Alcohol use

• NSAID use (e.g., ibuprofen)

• Post-COVID inflammatory changes

Expanded Evaluation (If CRP Remains Unexplained)

• Advanced lipid testing (e.g., Cardio IQ)

• Additional inflammation markers:

  • Homocysteine

  • Uric acid

• Autoimmune screening:

  • ANA (with caution due to false positives)

  • Consider if symptoms, fertility goals, or unexplained inflammation

• Celiac disease screening:

  • Total IgA + transglutaminase antibodies

• Gallbladder evaluation:

  • Bilirubin in metabolic panel

  • Abdominal ultrasound if indicated

Cancer & Gynecologic Considerations

• Age-appropriate cancer screening per USPSTF guidelines

  • Cervical, breast, colorectal

• Family history matters

• Cancer is a rare but important cause of elevated CRP

• Endometriosis can cause chronic inflammation and elevated CRP

Monitoring Strategy

• Recheck CRP every 2–3 months

• Look for:

  • Trends over time

  • Dynamic changes (suggest autoimmune or inflammatory processes)

  • Persistent elevation (raises concern for liver, metabolic, or systemic causes)

Big Picture Takeaway

• CRP is a signal, not a diagnosis

• Most elevations are due to metabolic, liver, or chronic low-grade inflammation

• Stepwise, thoughtful evaluation prevents over-testing while avoiding missed diagnoses

• Tracking CRP empowers patients to monitor and improve long-term health