Glucose, Body Fluid
Test ID:
702968
CPT code:
82945
Clinical Use:
Decreased fluid glucose concentration is usually associated with septic or inflammatory processes; in pleural effusion, very low glucose is a facet of rheumatoid effusion: pleural fluid glucose <50 mg/dL characterizes rheumatoid effusion. It is often much less.
Test Information:
Potts et al describe loculated effusions or empyemas with low glucose and low pH. Low glucose is found with empyema, tuberculosis, neoplasia, and rheumatoid effusion.1 In cases of malignant pleural effusions, when there is low pleural fluid glucose (<60 mg/dL) and pH <7.30, a probability of 90% that the cytologic yield will be positive was reported.
Specimen Type:
Any fresh body fluid
Requested Volume:
1 mL
Minimum Volume:
0.5 mL
Container Type:
Sterile container
Patient Preparation:
On synovial fluid collection only, patient should fast for eight hours.
Collection:
Collect aseptically into sterile tube.
Storage Instructions:
Room temperature
Stability Requirements:
Temperature |
Period |
---|---|
Room temperature |
14 days |
Refrigerated |
14 days |
Frozen |
14 days |
Freeze/thaw cycles |
Stable x3 |
Rejection Criteria
Improper labeling
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