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HelpTest Code LAB5471 Creatinine ED
Performing Laboratory
Asante Rogue Regional Medical Center / Ashland Community Hospital
Specimen Minimum Volume
0.5 mL
Billing Code
2050474
Specimen Requirements
ARRMC/AACH Draw a Lithium Heparin Dark Green Top Tube
Specimen Transport Temperature and Stability
Stable up to 4 hours at room/ambient temperature or refrigerated at 2-10 °C.
Reasons for Rejection
Quantity not sufficient (QNS)
Lack of Two Patient Identifiers:
1-Patient's First & Last name
2-Patient's Date of Birth
Specimen Stability Time Exceeded
Day(s) Test Set Up
Only performed STAT – 15 Min after receipt of specimen in lab
Additional Information
A renal function test, providing an index of glomerular filtration. Causes of high creatinine include: renal disease and insufficiency with decreased glomerular filtration (uremia if severe); urinary tract obstruction; reduced renal blood flow including congestive heart failure, shock and dehydration. Rhabdomyolysis causes high serum creatinine. Causes of low creatinine include debilitation, decreased muscle mass.
Limitations: Certain cephalosporins, especially cefoxitin, cause misleading (high) results.
NOTE: An estimate of glomeular filtration, using the 4 parameter MDFD equation (eGFR) is provided with each adult creatinine result.
Methodology
Varies depending on analyzer
Radiometer/Epoc: Amperometric Electrode measurement
Beckman Coulter AU: Enzymatic Kinetic Jaffe Reaction; IDMS standardized
Performing Department
Chemistry
Test Classification and CPT Coding
82565 - Creatinine; blood