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Test Code CRE U QNT Urine Creatinine, Timed Collection

Clinical System Name

Creatinine 24 Hour Urine

Sample Requirements

Specimen:  Urine

Container(s): 24 hour urine container

Preferred Vol: 24 hour collection

Minimum Vol: Timed collections other than 24 hr are acceptable.

 

Note: No preservatives are needed to start collection.  Please notify lab to obtain collection container (206) 987-2102.  Refrigerate specimen during collection.  Document start and stop dates and times with patient information.  Deliver labeled container to clinical lab upon completion.

Processing Instructions

Reject due to

Spin: N

Aliquot: N

Temp: 2-8 C

Storage location: Store labels in CPA refrigerator, FrigB bucket.  Urine is stored in CPA refrigerator. Timed collections other than 24 hr are acceptable.

 

Off-site collection: No preservatives are needed to start collection.  Please notify lab to obtain collection container (206) 987-2102.  Refrigerate specimen during collection.  Document start and stop dates and times with patient information.  Deliver labeled container to clinical lab upon completion.

Stability

 

Specimen Type Temperature Time
Urine Room Temp

2 h

  Refrigerated

1 w

  Frozen

30 d

 

Availability

STAT Performed TAT
N M - F, day shift 1 - 3 d

 

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Chemistry

Location: Chem East

Phone Number206-987-2617

Reference Range

 

  mg/24 hr
Newborn 25 - 50
Up to 2 Years 50 - 200
3 - 10 Years 200 - 700
10 - 13 Years 700 - 1000
13 - 17 Years 800 - 1300
Adult Female 900 - 1400
Adult Male 1500 - 2000

Methodology

Method:  Enzymatic rate method by Vitros 4600

Analytical Volume: 0.5 mL 

Limitations: Method is affected by fecal contamination, loss of specimen during collection, Loss of 10% of total urine collected invalidates the test.

CPT Codes

82570