Skip to main content

Glucose, Body Fluid

CPT 82945

Test Details

Methodology

Enzymatic

Result Turnaround Time

1 - 2 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

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.

Special Instructions

The request form must state site of fluid (ie, pleural, peritoneal, pericardial, synovial).

Footnotes

1. Potts DE, Taryle DA, Sahn SA. The glucose-pH relationship in parapneumonic effusions. Arch Intern Med. 1978 Sep; 138(9):1378-1380. 28707
2. Rodríguez-Panadero F, López Mejías JL. Low glucose and pH levels in malignant pleural effusions. Diagnostic significance and prognostic value in respect to pleurodesis. Am Rev Respir Dis. 1989 Mar; 139(3):663-667. 2923367

Custom Additional 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.2

Specimen Requirements

Specimen

Any fresh body fluid

Volume

1 mL

Minimum Volume

0.3 mL (Note: This volume does not allow for repeat testing.)

Container

Sterile container

Collection Instructions

Collect aseptically into sterile tube.

Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3

Reference Range

• Peritoneal: Not established

• Pleural:

− Transudate: Equal to simultaneously drawn plasma

− Exudate: Equal to simultaneously drawn plasma

• Synovial: Equal to simultaneously drawn plasma

The method performance specifications have not been established for this test in body fluid. The test result should be integrated into clinical context for interpretation.

Storage Instructions

Room temperature

Patient Preparation

On synovial fluid collection only, patient should fast for eight hours.

Causes for Rejection

Improper labeling

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
019497 Glucose, Body Fluid 2344-0 019497 Glucose, Body Fluid mg/dL 2344-0
Order Code019497
Order Code NameGlucose, Body Fluid
Order Loinc2344-0
Result Code019497
Result Code NameGlucose, Body Fluid
UofMmg/dL
Result LOINC2344-0