UW Hospital and Clinics Lab Test Directory
| Test Name: |
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CBC without Differential
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| Test Code(s): |
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HS / HEMO
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| CPT Code(s): |
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85027
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| Test Description: |
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Test Component: White blood cell count, red blood cell count, hemoglobin, hematocrit, MCV, MCHC, RDW CV, RDW SD, and platelet.
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| Days Performed: |
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Daily, 24 hours.
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| Turnaround Time: |
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Stat: 1 hour.
Routine: 4 hours.
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Specimen Requirements
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| Specimen: |
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Blood
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| Collection Container: |
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Preferred: K3EDTA-Lavender top
Also Acceptable:
K2EDTA-Lavender top
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| Collection Volume: |
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Preferred: 4 mL
Pediatrics: 1 mL
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| Sample Analyzed: |
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Whole Blood
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| Volume Required: |
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Preferred: 1 mL
Pediatrics: 0.25 mL in microtainer
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| Specimen Transport: |
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Transport specimen to the laboratory at ambient temperature.
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| Unacceptable Criteria: |
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Clotted specimens are not acceptable. Tubes with <25% of fill volume.
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| Stability: |
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Ambient: HCT, MCV, RDW CV, RDW SD, MCHC- 8 hours. WBC, RBC, Hgb, Platelet, - 24 hr
Refrigerated: Not acceptable
Frozen: Not acceptable
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Interpretation
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Reference Interval:
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For reference interval information, see individual tests.
| RDW CV reference interval: |
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| Age |
% |
| 0 days-29 days |
11.5-18.0 |
| 30 days-23 months |
10.0-16.0 |
| 2-9 years |
10.0-15.0 |
| 10-17 years |
10.0-14.0 |
| 18 years and up |
11.7-14.7 |
| RDW SD reference interval: |
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| 18 years and up |
36.0-46.0 fL |
| MCV reference interval: |
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| Age |
fL |
| 0 days-29 days |
102-115 |
| 30 days-5 months |
74-115 |
| 6 months-23 months |
72-88 |
| 2 -9 years |
76-90 |
| 10-17 years |
78-95 |
| 18 years and up |
80-97 |
| MCHC reference interval: |
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| 0 days and up |
32-36 g/fL |
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| Critical Calls: |
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View
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RDW RBC Indices MCV MCHC Indices RBC Complete Blood Count Hematology Survey
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