New Laboratory Tests and Services

On April 11, 2017, the units for reporting urinary protein results are changing to be consistent with national guidelines.  The change affects both the 24-hour urine as well as the urinary protein/creatinine ratio.               

 

Old units

New Units

Urine protein / creatinine ratio

g/g

mg/g

Urine protein, 24 hour

g/24 hours

mg/24 hours

 

As indicated above, the results will be reported in mg.  Because we previously reported these test results in grams, the new numeric result will be 1000x higher (1000 mg = 1 gram).

For example, a spot urine protein/creatinine ratio previously reported as 0.11 g/g will be reported as 110 mg/g after April 11, 2017. It is important to understand that the units have changed, but the values are clinically the same 0.11 g/g = 110 mg/g. Because of the unit change, patient results from the old results to the new results should not be trended together without the performing unit conversion.

Additionally, the result comment clarifying a nephrotic range result has been updated (>3000 mg/g creatinine or >3000 mg/24 hours).

There are new codes as a result of this change:

  1. PRCRUB - Urine protein/creatinine ratio
    Components:

    PROTU (no change)
    CREATU (no change)
    UPRCRR (this is the ratio)

  2. Urine protein, 24 hr is changed from test code PROT24 to UPRO24

Reference intervals are defined as <150 for both UPRCRR and UPRO24,

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