Carboxyhemoglobin, Blood
9 days
Co-oximetry
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Measures carboxyhemoglobin to detect carbon monoxide exposure. Used in suspected poisoning.
Whole Blood
7 mL
Lavender-top (EDTA) tube or green-top (heparin) tube.
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Refrigerate immediately after collection Do not remove cap. Submit original full, unopened tube.
| Temperature | Period |
|---|---|
| Refrigerated | 28 days |