Cd19cellslymphnfrlowerrespfc
Key facts at a glance
- LOINC
- 97597-9
- Short code
- CD19-BAL
- Synonyms
- CD19 Cells/lymph NFr Lower resp FC
- Category
- chemistry
- Sample
- serum
- Container
- Sterile specimen collection container for bronchoalveolar lavage fluid; transported on wet ice or refrigerated (2-8°C) to preserve cell viability
- Units
- N/A
- Ref low
- 1
- Ref high
- 5
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- flow-cytometry
- CPT
- 88184 (Flow cytometry, cell surface, cytoplasmic, or nuclear marker, technical component only; first marker) plus 88185 for each additional marker
- SNOMED
- 444018008 |Flow cytometry (procedure)| with appropriate morphology codes for bronchoalveolar lavage
- Specimen volume
- Minimum 5-10 mL of bronchoalveolar lavage (BAL) fluid; ideally 20-50 mL collected per lavage aliquot for adequate cellular analysis
- Stability
- Process specimen within 1-2 hours of collection for optimal cell viability. If delayed, store at 2-8°C and process within 4-6 hours. Do not freeze. Fixatives (e.g., paraformaldehyde) may be required if processing is further delayed.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 24–72 hours
- Order
- routine
Reference range
Reference values for CD19+ B-lymphocytes in bronchoalveolar lavage (BAL) are not well established and should be interpreted in clinical context. In healthy non-smoking adults, B-lymphocytes typically represent <1-5% of lymphocytes in BAL fluid. Reference ranges are laboratory-specific and method-dependent.N/A
Specimen collection typically performed during bronchoscopy. Patient should follow fasting and procedural preparation instructions as directed by the performing physician. Inform clinician of any anticoagulant or immunomodulatory medication use prior to bronchoscopy.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy