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Test Code RENALF Renal Function Panel, Fasting LAB0019

Test Method

Beckman DXC600

  • Albumin: Bromcresol Purple Timed Endpoint
  • BUN:Enzymatic-Conductivity Rate
  • Calcium: Ion Specific Electrode
  • Creatinine: Jaffe Rate
  • Glucose: Timed Endpoint
  • Sodium: Ion Exchange
  • Potassium: Ion Specific Electrode
  • Chloride: Ag/AgCl Electrode
  • CO2: Rate of pH Change, CO2 Electrodes
  • Phosphorus: Sample Blanked Phosphomolybdate Endpoint

Specimen Requirement

0.5 mL serum or plasma is required.

Additional Specimen Collection Information

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

Reference Values

Albumin: 3.5-5.2 gm/dL
 

BUN: 10 – 26 mg/dL
 

Calcium: 8.5-10.5 mg/dL

  • Critical values:

    •  
    • Low: < 6.0 mg/dL
    •  
    • High: > 13.0 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)
 

Phosphorus: 2.0-4.5 mg/dL

Performance

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.

Useful For

See individual constituents.

LOINC Code Information

24362-6 Renal Function 2000 Panel-Serum Or Plasma

CPT Code Information

80067 Multi-test Laboratory Panels; Renal function
panel