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Test Code MALB/CREAT Microalb w/Creatinine, Random Ur

Additional Codes

Cerner

NextGen

Microalb w/Creatinine, Random Ur

Microalb w/Creatinine, Random Ur

Methodology

Patient Preparation

None

Collection Instructions

Catheterized specimens collected according to clinical policies and procedures

Radom clean catch instructions: Random Urine Collection Instructions

Specimen Requirements

Container
  • Sterile/clean plastic urine container

 or  or 

  • Non-preservative urine tube (BD Vacutainer® Ref #364980)

Stability

Storage

Temperature

Stability

Room Temperature

18–28 °C

≤ 1 day

Refrigerated

2–8 °C

≤ 5 days

Frozen

Cannot be frozen

Rejection Criteria

Not Defined

Result Reporting and Reference Values

  • Creatinine Urine:
    • Reported in mg/dL.
    • Reference ranges not established.
  • Microalbumin Urine: <17 mg/L.
  • Microalbumin/Creatinine Ratio:

Category

Spot Collection (mg/g creatinine)

Normal

<30

Microalbuminuria

30 – 300

Clinical albuminuria

>300

Reflex Testing

None

Limitations

  • See Creatinine Urine Random
  • Microalbumin Urine
    • Ortho reports a bias with the following:
      • Furosemide at 60 mg/dL has a bias of -4.7 mg/L
      • Sulfamethoxazole at 120 mg/dL has a bias of 5.0 mg/L
    • Ortho reports no significant effect with the following:
      • Bilirubin up to 26 mg/dL
      • Hemoglobin 250 mg/dL
    • The following interpretive data is visible to the practitioner: Furosemide creates a negative bias, sulfamethoxazole creates a positive bias.

Useful For

  • This orderable includes:
  • See Creatinine Urine Random
  • Microalbuminuria is characterized by urinary albumin excretion above normal levels in the absence of clinically detectable nephropathy.  Mildly increased excretion of albumin has been recognized to be a predictor of impending development of clinical renal disease in patients with hypertension or diabetes mellitus.

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