CBC Report Analysis - Mrs. Sufiya (35F) | Dr. Essa Laboratory | 22-Jul-2026

Parameter-by-Parameter Breakdown

Key Findings

1. Mild Anemia (Normocytic Normochromic)

• Hb is 10.9 g/dL - mildly below the female reference range (11.5 g/dL lower limit)
• The MCV (88.9), MCH (29.1), and MCHC (32.7) are all normal, confirming the morphology report: normocytic normochromic anemia
• This pattern rules out simple iron deficiency (which would show microcytic/hypochromic RBCs in established disease) and B12/folate deficiency (macrocytic)

• Anemia of chronic disease / inflammation - most common cause overall
• Early iron deficiency - IDA starts normocytic before becoming microcytic (Goldman-Cecil: "The anemia at first is normochromic and normocytic, gradually becomes microcytic")
• Chronic kidney disease - erythropoietin deficiency
• Hypothyroidism
• Bone marrow suppression / aplastic anemia
• Hemolytic anemia
• Acute blood loss

2. Significant Leukopenia (WBC 2.6 x10^9/L) - Most Concerning Finding

• The WBC is markedly low at 2.6, well below the lower limit of 4.0 x10^9/L
• This is the most clinically significant abnormality in this report
• The differential is preserved (neutrophils 71%, meaning absolute neutrophil count ~1.85 x10^9/L - still adequate, but on the lower side)
• Absolute Neutrophil Count (ANC) = 2.6 × 0.71 = ~1.85 x10^9/L (mild neutropenia threshold is <2.0)

• Viral infections (EBV, CMV, HIV, hepatitis) - very common
• Autoimmune disease (SLE - Goldman-Cecil notes leukopenia is common in lupus)
• Drug-induced (many medications suppress bone marrow)
• Hypersplenism
• Bone marrow pathology (myelodysplastic syndrome, aplastic anemia)
• Nutritional deficiencies (B12, folate, copper)
• Typhoid fever (classic cause in Pakistan)

3. The Combination of Anemia + Leukopenia

• Systemic disease (autoimmune, infection, chronic illness)
• Bone marrow disorder (aplastic anemia, MDS)
• Hypersplenism (splenic sequestration)
• Nutritional deficiency (B12/folate can cause both - though MCV is normal here, early deficiency can be normocytic)

Recommended Next Steps

1. Peripheral blood smear review - to look for blast cells, dysplastic cells, or abnormal morphology
2. Reticulocyte count - to assess bone marrow response
3. LFTs, RFTs, CRP/ESR - to assess for chronic disease or organ involvement
4. Serum ferritin, iron studies (TIBC, serum iron) - to rule out iron deficiency (early stages can be normocytic)
5. B12 and folate levels - to rule out nutritional cause of bicytopenia
6. ANA, anti-dsDNA - to screen for SLE (especially in a young woman with leukopenia + anemia)
7. Thyroid function tests (TSH) - hypothyroidism causes normocytic anemia
8. HIV, EBV, CMV serology - viral causes of leukopenia
9. Widal test / blood cultures - if typhoid is clinically suspected (relevant in Pakistan)

Summary

• Mild normocytic normochromic anemia (Hb 10.9) - common in reproductive-age women, but the normal MCV/MCH points away from established iron deficiency
• Significant leukopenia (WBC 2.6) - this is the more concerning finding and requires further investigation

Disclaimer: This is an educational interpretation only. Clinical decisions must be made by a qualified physician who can evaluate the full clinical picture, symptoms, and history of the patient.

Clinical Correlation: Fever + Rigors + Chills with CBC Findings

Top Differential Diagnoses

🔴 #1 Priority - MALARIA

🟠 #2 - TYPHOID / ENTERIC FEVER (Salmonella Typhi)

• Prolonged fever (38.8°-40.5°C) for days to weeks
• Chills present in 35-45% of cases (Harrison's)
• Leukopenia is a classic CBC finding
• Pakistan is a high-incidence area - XDR S. Typhi is now the dominant strain here

🟡 #3 - DENGUE FEVER

• Causes fever, leukopenia, and thrombocytopenia
• Platelet is currently 181 - still normal, but dengue can drop it rapidly
• No rigors typically (but myalgia/bone pain "breakbone fever" is prominent)
• Less likely given the rigors pattern

🟡 #4 - SEPSIS / BACTEREMIA

• Any bacterial source can cause fever + rigors + leukopenia (sepsis-induced)
• UTI, pneumonia, abscess as primary focus

Urgent Investigations to Order NOW

Most Likely Diagnosis

1. Fever + rigors + chills = classic malarial paroxysm
2. Leukopenia + anemia = typical CBC pattern
3. Pakistan = endemic area
4. Acute onset (1 day) fits

Immediate Management (while awaiting results)

• Do not give antibiotics empirically before blood cultures
• Antipyretics (paracetamol) for fever - avoid NSAIDs (dengue/thrombocytopenia risk)
• IV fluids if dehydrated
• If malaria smear/RDT positive → start antimalarials immediately
  • P. vivax: Chloroquine + Primaquine (check G6PD first)
  • P. falciparum / XDR concern: Artemisinin-based combination therapy (ACT)
• If typhoid confirmed / high suspicion: Per Harrison's, XDR S. Typhi in Pakistan is resistant to fluoroquinolones, ampicillin, and TMP-SMX - Azithromycin or Ceftriaxone would be appropriate empiric choices pending culture sensitivity

Disclaimer: This interpretation is for educational purposes. The treating physician must correlate with the full clinical history, examination findings, and investigation results before making any treatment decisions.

MPICT (Malaria RDT) Negative - Updated Clinical Assessment

Important Caveat: Don't Fully Exclude Malaria Yet

Revised Differential (Post Negative MPICT)

#1 - Typhoid Fever (Most Likely Now)

• Leukopenia + neutropenia in 15-25% of typhoid cases - exactly matching WBC 2.6
• Chills present in 35-45% of patients
• Pakistan is an XDR S. Typhi epicentre - the resistant strain emerged in Sindh in 2016 and is now dominant across Pakistan
• It is only Day 1 of fever - typhoid incubation is 10-14 days but fever can be the presenting complaint; the classical "step-ladder fever" may not yet be established

#2 - Dengue (Must Rule Out Urgently)

• Dengue causes leukopenia + thrombocytopenia - platelets are currently 181 (still normal), but it is only day 1
• Classic features: fever, severe myalgia/arthralgia ("breakbone fever"), retro-orbital headache
• Rigors are less typical of dengue compared to malaria/typhoid, but can occur
• Dengue NS1 antigen is the test of choice in the first 5 days of illness

Investigations to Order Now

Empiric Treatment Guidance (Pakistan Context)

• For dengue - only supportive care (IV fluids, paracetamol); NSAIDs and aspirin are contraindicated
• Keep patient monitored for platelet drop and signs of dengue hemorrhagic fever
• Admit if typhoid is suspected given the severity of XDR disease and the need for IV antibiotics

Summary of Next Steps

1. Send blood smear (malaria not excluded yet)
2. Send dengue NS1 + blood culture + Typhidot today
3. Paracetamol for fever; IV fluids if needed
4. Avoid NSAIDs - platelet situation may worsen
5. Start Ceftriaxone IV if clinical picture is convincing for typhoid or if patient deteriorates before cultures return

Disclaimer: For educational purposes only. All treatment decisions must be made by the treating physician based on the full clinical picture and local antibiogram.