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Test Code RENALF Renal Function Panel, Fasting LAB0019

Performing Laboratory

UnityPoint The Finley Hospital

Test Method

Roche cobas Pro

  • Albumin: Bromcresol Green Timed Endpoint
  • BUN: Enzymatic Method
  • Calcium: Ion Selective Electrode
  • Creatinine: Enzymatic Method
  • Glucose: Enzymatic Method
  • Sodium: Ion Selective Electrode
  • Potassium: Ion Selective Electrode
  • Chloride: Ion Selective Electrode
  • CO2: Enzymatic Method
  • Phosphorus: Molybdate UV

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.

Specimen Requirement

0.5 mL serum or plasma is required.

Useful For

See individual constituents.

Reference Values

Albumin: 3.5-5.2 gm/dL
BUN: 

1. Males: 

  • 1-17 years of age: 7-20 mg/dL
  • ≥18 years of age: 8-24 mg/dL
  • Reference values have not been established for patients <12 months of age.

2. Females:

  • 1-17 years of age: 7-20 mg/dL
  • ≥18 years of age: 6-21 mg/dL
  • Reference values have not been established for patients <12 months of age. 

Calcium: 

  • 0-10 days: 7.6-10.4 mg/dL.
  • 10 days - 2 years: 9.0-11.0 mg/dL
  • 2-12 years: 8.8-10.8 mg/dL
  • 12-18 years: 8.4-10.2 mg/dL
  • 18-60 years: 8.6-10.0 mg/dL
  • 60-90 years: 8.8-10.2 mg/dL
  • >90 years: 8.2-9.6 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: 

Age Reference Range 
0-2 months  0.31‑0.88 mg/dL 
2-12 months 0.16‑0.39 mg/dL 
1-3 years  0.18‑0.35 mg/dL     
3-5 years  0.26‑0.42 mg/dL 
5-7 years  0.29‑0.47 mg/dL 
7-9 years  0.34‑0.53 mg/dL  
9-11 years  0.33‑0.64 mg/dL 
11-13 years  0.44‑0.68 mg/dL  
13-15 years  0.46‑0.77 mg/dL  
>15 years female 0.51‑0.95 mg/dL 
>15 years male  0.67‑1.17 mg/d

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

Sodium: 136 – 145 mmol/L

  • Critical values:

    •  low:  < 120 mmol/L
    •  high: > 160 mmol/L

Potassium: 3.5 – 5.1 mmol/L

  • Critical values:

    •  low: < 3.0 mmol/L
    •  high:  > 6.0 mmol/L

Chloride: 98 – 107 mmol/L
 

CO2: 22 – 29 mmol/L

  • Critical values:

    • Low: < 10.0 mmol/L
    • High: > 40.0 mmol/L

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

Phosphorus: 

Adult (>18 years old): 2.5-4.5 mg/dL

Age  Male  Female 
<1 month  3.9-6.9  4.3-7.7 
1 month - <1 year 3.5-6.6  3.7-6.5 
1 - 3 years 3.1-6.0  3.4-6.0 
4 - 6 years  3.3-5.6  3.2-5.5 
7 - 9 years 3.0-5.4  3.1-5.5 
10 - 12 years 3.2-5.7  3.3-5.3 
13 - 15 years 2.9-5.1  2.8-4.8 
16 - 18 years 2.7-4.9  2.5-4.8 

CPT Code Information

80067 Multi-test Laboratory Panels; Renal function
panel

LOINC Code Information

24362-6 Renal Function 2000 Panel-Serum Or Plasma

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.