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Test Code LAB81 Glucose Fasting

Additional Codes

CPT Code: 82947

Methodology

This test is also included in Basic Metabolic Panel (LAB15); Comprehensive Metabolic Panel (LAB17); and Renal Function Panel (LAB19).

Performing Laboratory

TidalHealth Peninsula Regional - Core Laboratory: Chemistry

Specimen Requirements

 

Patient PreparationPatient should be instructed to eat and drink nothing except for water for 8 hours prior to test.

 

 

Specimen Collection

Submit only 1 of the following specimens:

 

Plasma
Draw blood in a green-top (lithium heparin) tube from a fasting patient. Spin down and send 2 mL of lithium heparin plasma.
Note: 1. Indicate plasma.

2. Label specimen appropriately (plasma).

 

Serum
Draw blood in a gold-top serum gel tube from a fasting patient. Spin down and send 2 mL of serum.
Note: 1. Indicate serum.

2. Label specimen appropriately (serum).

Reference Values

0 days: 40-60 mg/dL

1 day-11 months: 50-80 mg/dL

1-17 years: 60-100 mg/dL

≥18 years: 70-100 mg/dL (termed)

Note: A fasting glucose of 100-125 mg/dL is termed “impaired fasting glucose.”

 

Infant Critical value (automatic call-back) < or equal to 4 weeks:  <40 mg/dL or >400 mg/dL

 

Pediatric Critical value (automatic call-back) > 4 weeks and < 16 years:  <50 mg/dL or >400 mg/dL

 

Adult Critical value (automatic call-back) ≥ 16 years:  <50 mg/dL or >500 mg/dL

Additional Information

Available STAT