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HelpTest Code F2ISO F2-Isoprostanes, Random, Urine
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
F2-Isoprostanes, USpecimen Type
UrineSpecimen Required
Patient Preparation: Patient should not take nonsteroidal anti-inflammatory drugs within the 72 hours or aspirin within the 2 weeks prior to specimen collection.
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Container/Tube: Plastic urine tube
Specimen Volume: 5 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 7 days | |
| Frozen | 30 days | ||
| Ambient | 7 days |
Specimen Minimum Volume
1 mL
Day(s) Performed
Tuesday
Specimen Retention Time
7 daysReport Available
2 to 9 daysReference Values
≥18 years: ≤1.0 ng/mg creatinine
Reference values have not been established for patients who are younger than 18 years of age
Additional Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| CRETR | Creatinine, Random, U | No | Yes |
Useful For
Assessment of in vivo lipid peroxidation
Considered to be an index of systemic oxidative stress over time
Testing Algorithm
When F2-isoprostanes testing is performed, urine creatinine will always be performed at an additional charge.
CPT Code Information
82542
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| F2ISO | F2-Isoprostanes, U | 90783-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 88677 | 15-F2t-Isoprostane, U | 90783-2 |
Forms
If not ordering electronically, complete, print, and send a Cardiovascular Test Request Form (T724) with the specimen.