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Test Name:
Differential, Body Fluid
- SBMF No:
25162 - Performance Lab Name:
Hematology - Test Mnemonic:
BF DIFF - ABN:
Not required - CPT Code:
89051 - LOINC Code:
9306-2; 10330-9 - Also Known As:
Body Fluid Differential - Also See:
25116 Body Fluid Cell Count
25161 Body Fluid Crystals
23116 Body Fluid Total Protein - Spec Type:
Body fluid - Spec Container:
Lavender top (EDTA) tube - Pref Vol:
3.0 mL - Min Vol:
0.5 mL - Fasting:
No - Spec Collect:
Collected by physician or nursing personnel
Immediately after collection, gently invert lavender top tube several times to mix contents
Document source of fluid on label and requisition - Spec Process:
Do not centrifuge - Spec Store Transport:
Refrigerated - Spec Stability:
4 hours room temperature (20-30°C)
24 hours refrigerated (2-8°C) - Spec Reject:
Centrifuged or severely coagulated sample - Methodology:
Microscopic Examination - Clinical Significance:
Serous fluids for laboratory examination are collected by needle aspiration from body cavities. These aspiration procedures could include thoracentesis (pleural), pericardiacentesis (pericardial), synovial (joint) fluid and paracentesis (peritoneal). Many pathologic conditions can cause a buildup (effusion) of serous fluids. Effusion of serous fluid can be placed into two general categories: transudates and exudates. A transudate disrupts the balance in the regulation of fluid filtration and reabsorption. An example is the changes in hydrostatic pressure created by congestive heart failure. Exudates are produced by conditions that directly involve the membranes of the particular cavity including infections and malignancies. Analysis of body fluid usually includes one or more of the following: cell count, differential, total protein, crystals, pH, specific gravity, glucose, albumin, amylase, sodium, potassium, chloride, LD, creatinine, urea nitrogen, uric acid, routine culture, and cytologic studies. Additional testing may include specialized microbiology cultures for AFB or fungus or testing for the presence of bilirubin. Only those tests that are ordered will be performed. - Reference Range:
Reference ranges not available for body fluid specimens
Physician must interpret results based upon origin of fluid and patient's clinical condition - Day Run:
Sun-Sat (daily) - Time Run:
As received - Time Reported:
4 hours - Test Type:
BODY FLUID
