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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