ISONIAZID, LEVEL
| Synonyms: | INH |
| Computer Code: | (ISNZD) |
| Specimen Collection: | 4 mL blood (red (preferred) or sodium heparin green top tube). Include drug dosage, and time and date of last dose. Send immediately to Special Chemistry. Must be frozen within 1 hour of collection. No gel-barrier tubes. |
| Minimum Volume: | 2 mL |
| Handling Instructions for Offsite Areas: | Serum: allow to clot, centrifuge 10 minutes, remove serum immediately, freeze. Min 0.5 mL serum. Plasma: centrifuge, remove plasma immediately, freeze. Min 0.5 mL plasma. Serum/Plasma must be frozen within 1 hour of collection. Do not ship on Friday Separate serum or plasma from cells ASAP. |
| Reference Values: | See reference laboratory report. |
| Lab Code: | Send Out |
| Requisition: | SPEC C |
| Test Frequency: | Mon-Thur only |
| Routine TAT: | 20 days |
| Stat TAT: | N/A |
| CPT Code(s): | 80375, 80299 |
| LCD or NCD: | |
| Methodology Used: |
See Addendum XVII |