82940:CYANIDE, BLOOD
Author PeaceHealth Laboratories
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| Methodology: |
Spectrophotometry (S) |
| Edit Date: |
3/17/2008 |
| Performed: |
Daily |
| Released: |
24-48 hours after setup at PeaceHealth Laboratories’ reference lab. |
| CPT Code: |
82600-90 |
| Specimen Collection Details |
| Collection: |
Draw only on Monday-Thursday. One 10 mL green top tube (sodium heparin). Do not use plasma separator tube (PST) or gel barrier tube. Lavender top tube (EDTA) can be used with disclaimer only. |
| Handling: |
Leave as whole blood; do not refrigerate or freeze. |
| Stability: |
48 hours ambient if kept tightly capped. Specimen unstable refrigerated or frozen. |
| Standard Volume: |
7 mL whole blood. |
| Minimum Volume: |
2 mL whole blood. |
| Transport: |
Ambient. |
| Rejection Criteria: |
Clotted specimen; hemolysis; use of PST, SST, or gel barrier tube. |
|
|
Normal: |
Potentially Toxic: |
|
<20 ug/dL |
>50 ug/dL |
| Elevated values seldom indicate toxicity for patients on nitroprusside therapy. |