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HelpTest Code Tacro Tacrolimus Level Whole Blood
Patient Preparation
No special patient preparation required
Special Collection Instructions
| Peak | Collect 1-4 hours after dose |
| Trough | collect immediately prior to dose |
Collection Method
Venous collection
Minimum Volume
- Adults: 1 mL
- Pediatric: 0.8 mL
Container
Purple (EDTA)
Preferred Specimen
Whole Blood
Acceptable Specimens
EDTA Whole Blood
Reference or Target Ranges
Target concentrations vary based on type of transplant and the duration since the transplant.
Assay; EMIT
Reportable Units
ng/mL
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | N/A |
| Icterus Threshold | N/A |
| Lipemia Threshold | N/A |
| Other | QNS, contaminated, improperly labeled, improper specimen type |
Specimen Stability
| Ambient | 5 days |
| Refrigerated (4°C to 8°C) | 7 days |
| Frozen(-40°C to 0°C) | 3 months |
Performance Information
| Days and Time Performed | Batched twice daily; Monday - Friday (1000 & 2200) |
| Expected Turn Around Time | Batched 12-24hrs |
| Stat Availability | Yes, upon request |
| Performing Bench | UH Chemistry |
| Methodology/Method Description | Siemens Atellica - ImmunoAssay |
CPT Codes
80197