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HelpTest Code Billings Clinic: 0235 Mayo: GLBF Glucose, Body Fluid
Reporting Name
Glucose, BFPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Aiding in the diagnosis of infection using body fluid specimens
Method Name
Enzymatic Photometric Assay
Ordering Guidance
For spinal fluid specimens, order GLSF / Glucose, Spinal Fluid. Testing will be changed to GLSF if this test is ordered on that specimen type.
Necessary Information
1. Date and time of collection are required.
2. Specimen source is required.
Specimen Required
Specimen Type: Body fluid
Preferred Source:
-Peritoneal fluid (peritoneal, abdominal, ascites, paracentesis)
-Pleural fluid (pleural, chest, thoracentesis)
-Drain fluid (drainage, JP drain)
-Peritoneal dialysate (dialysis fluid)
-Pericardial
-Amniotic fluid+
-Synovial fluid
- Pancreatic cyst
Acceptable Source: Write in source name with source location (if appropriate)
Collection Container/Tube: Sterile container
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions:
1. Centrifuge to remove any cellular material and transfer into a plastic vial.
2. Indicate the specimen source and source location on label.
Specimen Type
Body FluidSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Body Fluid | Refrigerated (preferred) | 7 days | |
| Frozen | 30 days | ||
| Ambient | 24 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross Lipemia | Reject |
| Gross Icterus | Reject |
| Anticoagulant or additive Breast milk Nasal secretions Gastric secretions Bronchoalveolar lavage (BAL) or bronchial washings Colostomy/ostomy Feces Saliva Sputum Cerebrospinal fluid Urine Vitreous fluid |
Reject |
Reference Values
An interpretive report will be provided.
Interpretation
Body fluid glucose concentrations may be decreased due to increased cellular metabolism and should be interpreted in the context of blood glucose concentrations and in conjunction with other laboratory and clinical findings.(8, 9)
Pleural, peritoneal, and pericardial fluid and serum glucose concentrations are similar in the absence of infection.(3)
Transudative pleural fluid glucose concentrations are similar to serum glucose concentrations, while exudates have glucose concentrations less than serum glucose. Glucose levels below 60 mg/dL are typically associated with low fluid pH.(1,10)
Amniotic fluid glucose levels below 16 mg/dL is suggestive of infection.(6)
Synovial fluid glucose concentrations are similar to fasting blood glucose concentrations or approximately 50% of the nonfasting serum glucose concentration under normal conditions. Values below this can be seen with infection.(7)
Pancreatic cyst fluid glucose less than50 mg/dL is associated with mucinous cystic lesions.(13-15)
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 to 3 daysTest Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
82945
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| GLBF | Glucose, BF | 2344-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| GL_BF | Glucose, BF | 2344-0 |
| FLD12 | Fluid Type, Glucose | 14725-6 |