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Test Code C07R Basic Metabolic Panel with Reflex to Hemoglobin A1c

Important Note

This Basic Metabolic Panel automatically reflexes to a Hemoglobin A1c when the glucose result is greater than or equal to 100 mg/dL.

This test is available at UCL only.

Additional Codes


PowerChart: Not applicable

Epic: Not applicable

Test Method

UCL: DXC Beckman

  • BUN:Enzymatic-Conductivity Rate
  • Glucose: Timed Endpoint; Beckman
  • Creatinine: Jaffe Rate
  • Sodium: Ion Exchange
  • Potassium: Ion Specific Electrode
  • Chloride: Ag/AgCl Electrode
  • CO2: Rate of pH Change, CO2 Electrodes
  • Calcium: Ion Specific Electrode

Specimen Requirement

Basic Metabolic Panel:

0.5 mL serum or plasma is required.


Hemoglobin A1c:

3 mL whole blood is required.

Additional Specimen Collection Information

Basic Metabolic Panel:

Collect blood in a lithium heparin, green-top or red-top tube from a fasting patient. (12 hour fast is recommended.) PST and SST (gel tubes) are acceptable. Serum or plasma should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerate the specimen if unable to assay within 8 hours of collection. Hemolyzed specimens are not acceptable. Samples with >3+ lipemia must be cleared prior to analysis.


Hemoglobin A1c:

Collect blood in an EDTA; purple-top whole blood is preferred. Lithium heparin green-top whole blood is also acceptable.


Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours after the specimen arrives at the testing site.

Expedite orders: Typically completed within 1 hour after the specimen arrives at the testing site.

STAT orders: Typically completed within 30 minutes after the specimen arrives at the testing site.

Reference Values

BUN: 10 - 26 mg/dL

Glucose:  70 - 99 mg/dL

  • Critical values:

    • Low: < 50 mg/dL
    • High: > 450 mg/dL

Creatinine: 0.4 - 1.4 mg/dL

eGFR (calculated): ≥ 60 mL/min/1.73m2
eGFR-AA (calculated): ≥60 mL/min/1.73m2

Sodium: 135 - 145 meq/L

  • Critical values:
    •  low:  < 120 meq/L
    •  high: > 160 meq/L

Potassium: 3.5 - 5.0 meq/L

  • Critical values:
    •  low: < 3.0 meq/L
    •  high:  > 6.0 meq/L

Chloride: 100 - 108 meq/L

CO2: 22 - 32 meq/L

  • Critical values:
    • Low: < 10.0 meq/L
    • High: > 40.0 meq/L

Anion gap: (calculated value:  7-16 meq/L)

Calcium: 8.5-10.5 mg/dL

  • Critical values:
    • Low:  < 6.0 mg/dL
    • High: > 13.0 mg/dL

CPT Code Information

80048 Multi-test Laboratory Panels; Basic metabolic panel (Calcium, total)

Useful For

See individual constituents.

LOINC Code Information

24321-2 Basic Metabolic 2000 Panel-Serum or Plasma

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