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92771: F2-Isoprostane/Creatinine Ratio Print View
F2-Isoprostane     ng/mL 
Creatinine, Urine     mg/dL 
F2-Isoprostane/Creat Ratio     ng/mg 

PRIMARY
1 Urine w/no Preservative 2 (1.5) mL   Refrigerated - 7 Day(s)/Room Temperature - 48 Hour(s)/Frozen - 6 Month(s)  
ALTERNATE

The F2-Isoprostane/Creatinine ratio is used to measure oxidative stress, particularly in individuals with lifestyle risks due to poor diet or smoking, those with a family history of cardiovascular disease or those with hyperlipidemia.

1. Collect random urine in preservative-free urine collection
container (cup).
2. Transfer 2 mL urine sample into the preservative-free urine
transport tube.
3. Store and transport refrigerated. Please discard urine collection
container.
Setup Schedule
Monday-Saturday

Reported (Analytical Time)
4 days

CPT Codes
82542,82570

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Reject Criteria: Specimens other than preservative-free urine; improper labeling; samples not stored properly
Transport Temperature: Refrigerated
Specimen Stability:
Room temperature: 48 hours
Refrigerated: 7 days
Frozen (-20 degrees Celsius): 6 months
Frozen (-70 degrees Celsius): 6 months
Methodology: Liquid Chromatography-Tandem Mass Spectrometry






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