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HelpTest Code CF Diff CSF DIFFERENTIAL
Patient Preparation
Sterile collection with specimen transported in a sterile container
Special Collection Instructions
Sterile, not clotted, properly labeled to include specimen source
Collection Method
|
Distribution Order |
|
|
Tube #1 |
Chemistry and Immunology tests |
|
Tube #2 |
Cultures and other Microbiology tests |
|
Tube #3 |
Cell counts and differentials |
|
Tube #4 |
Cytology |
Minimum Volume
2 mL
Container
Sterile CSF Tube
Preferred Specimen
CSF
Acceptable Specimen(s)
CSF
Reference or Target Ranges
|
Color |
Colorless to Yellow |
|
Clarity |
Clear |
|
RBC |
0/uL |
|
WBC |
|
|
0-4 years |
0-30/uL |
|
4-12 years: |
0-10/uL |
|
12 years-Adult |
0-5/uL |
|
Neutrophils |
|
|
0-8 days: |
0-2/uL |
|
8 days-Adult: |
0-1/uL |
|
Lymphocyte |
|
|
0-8 days: |
0-7/uL |
|
8 days-4 years: |
0-16/uL |
|
4-12 years: |
0-8/uL |
|
12 years-Adult |
0-4 /uL |
|
M/M/H: |
|
|
0-8 days: |
0-18/uL |
|
8 days-4 years: |
0-9/uL |
|
4-12 years: |
0-4/uL |
|
12 years-Adult: |
0-2/uL |
Critical Value
|
All Ages: |
|
30 Nucleated Red Blood Cells (NRBC)/uL |
|
5 Segmented Neutrophils |
|
20 Lymphocytes |
|
25 M/M/H/ uL |
Reasons for Rejection
|
Other: |
QNS, contaminated, Improperly labeled, Improper specimen type |
Specimen Stability
|
Ambient |
Processed within 1 Hour |
|
|
Due to difficulty of obtaining specimens, they will be counted when arrived in lab. |
Performance Information
|
Days and Time Performed |
24/7 |
|
Expected Turn Around Time |
STAT: 1 hour, Routine: 4 hours |
|
Stat Availability |
Yes |
|
Performing Bench |
CRMC Hematology |
Additional Information / Important Notes
CSF differentials are added to CSF counts when 1 or more WBCs are present in the cell count.
Special Handling
Room Temperature
Methodology/Method Description
Manual Count / Manual Differential – CSF counts are performed manually by skilled laboratory techs.
CPT Codes
84157