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Test Code Billings Clinic: 1128 Complete Blood Count (CBC) With Manual Differential, Blood

Performing Laboratory

Billings Clinic Laboratory: Hematology

Useful For

  • Screening tool to confirm a hematologic disorder
  • Establish or rule out a diagnosis
  • Detect an unsuspected hematologic disorder
  • Monitor effects of radiation or chemotherapy
  • These counts are used as clinical guides in the diagnosis and/or monitoring of many diseases

Methodology

Electronic resistance detection enhanced by Hydro Dynamic Focusing, flow cytometry method (using a semiconductor laser), cummulative pulse height detection, and SLS (sodium lauryl sulfate) hemoglobin method, read photometrically

Specimen Requirements

  • Specimen must arrive within 24 hours of draw (ambient) or within 48 hours of draw (refrigerated).
  • Draw blood in a lavender-top (EDTA) tube(s), and send 4 mL of unprocessed EDTA whole blood refrigerated. 
  • Do not centrifuge.
  • Forward unprocessed whole blood promptly.

Reject Due To

  • Clotted specimens
  • Specimens containing small clots, fibrin strands or platelet clumps
  • Gross hemolysis
  • Samples drawn above an IV line
  • Samples kept at room temperature > 24 hours after collection

**Lipemia, icterus and cold agglutinins may affect the test results.

Reference Values

Reference values are included with patient’s report.

Day(s) Test Set Up

Daily

Test Classification and CPT Coding

85007 - Blood count; blood smear, microscopic examination with manual differential WBC count

85027 - Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)
 

LCD or NCD test. ICD-9 code is required for this test. When appropriate, obtain a properly executed ABN and submit the ABN with test order(s). See “Medical Necessity and Advanced Beneficiary Notice (ABN) Policy and Form” under "Resources" for a copy of a form and additional information.

LOINC Code Information

Reporting Name LOINC Code
Hemoglobin 718-7
Hematocrit 4544-3
Erythrocytes 789-8
MCV 787-2
RBC Distrib Width 788-0
MCH 785-6
MCHC 786-4
MPV 32623-1
Platelet 777-3
Leukocytes 6690-2
Neutrophils 751-8
Lymphocytes 731-0
Monocytes 742-7
Eosinophils 711-2
Basophils 704-7

 

Profile/Testing Information

  1. A manual differential will not be performed on specimens with a WBC ≤0.5 unless the ordering physician clearly indicates that he/she desires a manual differential on a specimen with extremely low WBC. If the manual differential is not performed, the laboratory staff will cancel the CBC with manual differential and reorder a CBC with no differential.
  2. In the event that a peripheral blood smear interpreted by a physician with a written report (85060) is indicated, Billings Clinic Laboratory will call the ordering physician/nonphysician provider (NPP) and request a specific order for this test.
  3. This test is to be ordered when the physician/NPP requests a CBC with a manual differential.