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Test Code GL GLUCOSE

Important Note

Test subject to Medicare National Coverage Determination (NCD).

See Medical Necessity documentation requirements by clicking on  

Medicare National Coverage Determinations under General Information

to left of this screen.

    

 

Additional Codes

LAB82 - Glucose, Serum 

Performing Laboratory

Porter Hospital Laboratory

Specimen Requirements

Specimen Type: Blood
Container/Tube: Grey top, serum gel
Also Acceptable: Tiger top (serum,gel); Green top (Lithium Heparin)
Specimen Volume: Full tube, submit 1.0 mL
Specimen Minimum Volume: 0.5 mL
Collection Instructions:

  1. Send specimen in original tube.
  2. If there is a delay in transport of >1 hour, centrifuge tube.
  3. Centrifuged SERUM samples are stable for: 
  • 7 days @ 2-8°C
  1. Centrifuged PLASMA samples are stable for: 
  • 24 hours @ 2-8°C

NOTE:  Approximately 7% of glucose is lost/hr when kept on cells unspun.

Specimen Transport Temperature

Refrigerated

Test Classification and CPT Coding

82947

Test Schedule / Analytical Time / Test Priority / Turn Around Time

Daily / 24 hours / Available STAT / Routine - 4 hours

                                                              STAT - 60 minutes

Normal Reference Values

0 up to 1 Days   40-99 mg/dl
1 Days up to 7 Days   50-99 mg/dl
7 Days up to 18 Years   70-99 mg/dl
18 Years up to Unspecified   70-99 mg/dl

Critical Values

0 up to 1 Days <40 or >180 mg/dl
1 Days up to 7 Days <40 or >180 mg/dl
7 Days up to 18 Years <50 or >300 mg/dl
18 Years up to Unspecified <55 or >500 mg/dl