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Lab Dept:
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Hematology
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Test Name:
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HEMOGLOBIN
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General Information
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Lab Order Codes:
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HGB
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Synonyms:
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Hgb; Hb
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CPT Codes:
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85018 – Blood count; hemoglobin
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Test Includes:
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Hemoglobin reported in g/dL.
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Logistics
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Test Indications:
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Useful for evaluating anemia, blood loss, hemolysis, polycythemia, and other diseases of hematopoiesis.
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Lab Testing Sections:
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Hematology
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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4 hours
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Special Instructions:
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Do Not collect specimens while lipids are being infused.
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Specimen
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Specimen Type:
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Whole blood
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Container:
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Lavender top tube (EDTA) or Lavender Microtainer®
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Draw Volume:
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2 mL in a 5 mL Lavender top tube or 0.5 mL in Lavender Microtainer®
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Processed Volume:
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Same as Draw Volume
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Collection:
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Fill to mark on tube or Microtainer®. Mix thoroughly by gentle inversions.
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Special Processing:
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Lab Staff: Do Not centrifuge
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Patient Preparation:
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None
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Sample Rejection:
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The following specimens will be rejected:
Improper tube, Clotted sample, Underfilled tube, Overfilled tube
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Interpretive
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Reference Range:
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Age and sex dependent, see CBC Reference Value Table
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Critical Values:
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<7.0 g/dL
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Limitations:
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Hyperlipemic plasma or WBC >100,000/mm3 may falsely elevate the hemoglobin result which may delay the turn around time.
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Methodology:
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Cyanmethemoglobin - Automated Cell Counter
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References:
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Harmening DH (1997) Clinical Hematology and Fundamentals of Hemostasis, 3rd ed
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Oski and Nathan (1998) Hematology of Infancy and Childhood, 5th ed
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Updates:
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2/17/2005: Critical values previously listed as 0-7 day: <11.5 g/dL, 8-28 days: <10.0 g/dL, >28 days: <8.0 g/dL.
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