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HelpTest ID FFURO Furosemide (Lasix)
Specimen Required
Submit only 1 of the following specimens:
Plasma
Draw blood in a green-top (sodium heparin) tube(s), plasma gel tube is not acceptable. Spin down and send 1 mL sodium heparin plasma refrigerated in a plastic vial.
Serum
Draw blood in a plain red-top tube(s), serum gel tube is not acceptable. Spin down and send 1 mL of serum refrigerated in a plastic vial.
Method Name
High Performance Liquid Chromatography with Fluorescence
Reporting Name
Furosemide (Lasix)Specimen Type
VariesSpecimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Varies | Refrigerated (preferred) | 7 days |
| Frozen | 180 days | |
| Ambient | 72 hours |
Reject Due To
| Hemolysis | NA |
| Lipemia | NA |
| Icterus | NA |
| Other | NA |
Reference Values
Expected serum furosemide concentration in patients on usual daily dosages: Up to 5.0 ug/mL
Toxic: greater than 50.0 ug/mL
Day(s) Performed
Monday through Sunday
Report Available
7 to 11 daysPerforming Laboratory
Medtox Laboratories, Inc.CPT Code Information
80299
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FFURO | Furosemide (Lasix) | 3659-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| Z1189 | Furosemide | 3659-0 |