Table 3:

Laboratory results from beryllium lymphocyte proliferation test on bronchoalveolar lavage

Beryllium sulfate concentrationMean Stimulation Index*Reference
Day 3Day 4Day 6
1 × 10−4 MQNS7.0QNS< 2.3
1 × 10−5 MQNS3.1QNS< 2.3
1 × 10−6 MQNS1.8QNS< 2.3
  • Note: QNS = quantity not sufficient.

  • * Positive result (bold) is 2 or more Mean Stimulation Index values greater than at least 2.3.