Complete Blood Count (CBC)
Complete Blood Count (CBC) explained
A Complete Blood Count (CBC) evaluates RBCs, WBCs, and platelets to assess anemia, infection, and more.
Varies by laboratory (LDT/CLIA; not FDA‑approved as a drug)Complete Blood Count (CBC) helps treat
• Anemia evaluation
• Infection/immune clues
• Monitoring chronic conditions
additional medications
• Related clinical evaluation and history
• Repeat testing to confirm abnormal results
• Additional targeted labs as recommended
medication risks
• False positives/negatives leading to unnecessary anxiety or missed diagnoses
• Privacy and insurance implications depending on results
• Pre‑analytical variables (fasting, meds) can affect accuracy
side effects
• Bruising or soreness at draw site
• Lightheadedness or fainting (rare)
• Infection at puncture site (very rare)
FAQs
Q: Fasting?A: Not required.
Q: Differential included?
A: Often includes WBC differential for further detail.
Q: Next steps for abnormalities?
A: Repeat, smear, iron/B12 studies, or referrals as indicated.
Q: Same‑day results?
A: Common.
Q: Insurance?
A: Covered when indicated.
