TABLE 3.
Retrospective data collected for culture-positive specimens in which contamination occurred during processing on a particular daya
| Specimen positionb | VNTR profilec | AFB seend | Time to positive MGIT result (wk)e | Patient |
|---|---|---|---|---|
| 2 | 02235 | sc | 1 | r |
| 12 | NA | +++ | 1 | s |
| 13 | 12533f | No | 2 | t |
| 14 | 12533 | No | 2 | u |
| 16 | NA | No | 2 | u |
| 17 | 12533 | No | 2 | v |
| 20 | NA | No | 4 | w |
| 22 | 12533 | No | 6 | x |
| 24 | 32234 | sc | 2 | y |
| 32 | 12533 | No | 4 | z |
a
The specimens processed had sequential specimen identification numbers and were processed in the same order. A total of 34 specimens were processed on this day.
b
Processing position relative to the source specimen.
c
Each digit represents the number of exact tandem repeats present at each locus. NA, specimens were not available for VNTR analysis.
d
Seen on auramine staining. sc, scanty AFB seen; +++, presence of many AFB.
e
Number of weeks between inoculation and positive MGIT result.
f
The VNTR profile 12533 was found only on one other occasion in this study.