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HelpTest Code 9176 Furosemide (Lasix)
Additional Codes
| Mayo Test ID |
|---|
| FFURO |
Reporting Name
Furosemide (Lasix)Performing Laboratory
Medtox Laboratories, Inc.Specimen Type
VariesSpecimen 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.
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Refrigerated (preferred) | 7 days | |
| Frozen | 180 days | ||
| Ambient | 72 hours |
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
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 |
Report Available
7 to 11 daysMethod Name
High Performance Liquid Chromatography with Fluorescence
For BJH Laboratory Use Only
Laboratory Processing Instructions:
Call Laboratory Medicine resident at digital pager 314-747-1320 for approval before drawing the specimen.
BJH Core Laboratory will forward to Mayo Medical Laboratories who will forward to the performing laboratory. Do not reject specimen if not received on ice.