| SigEffectCode | SigEffectName | SigEffectDescr | | F_LC50 | Fails LC50 | Fails LC50 (50% mortality), draft |
| Fail | Fail_Toxic | Failed EPA TST procedure criteria and is determined to be toxic |
| NA | Not Applicable | Significance not applicable to sample, Sample is control or reference and statistical significance is not applicable. |
| NR | Not Recorded | Not recorded |
| NS | Not Significant | Not significant, see comments for any available explanation. |
| NSG | Not Significant Greater Similarity | Not significant compared to control sample based on statistical test at alpha level, CalculatedValue equal to or greater than CriticalValue. Has greater similarity to control sample, PercentEffect equal to or smaller than EvalThreshold. (No criteria met) |
| NSL | Not Significant Less Similarity | Not significant compared to control sample based on statistical test at alpha level, CalculatedValue equal to or greater than CriticalValue. Has less similarity to control sample, PercentEffect value larger than EvalThreshold. (Only second criteria met) |
| NSR | Not Significant to Reference | Not significant when compared to reference, sample not compared to negative control. |
| Pass | Pass_Non-Toxic | Passed EPA TST procedure criteria and is determined to be non-toxic |
| S | Significant | Statistically significant, see comments. |
| SG | Significant Greater Similarity | Significant compared to control sample based on statistical test at alpha level, CalculatedValue less than CriticalValue. Has greater similarity to control sample, PercentEffect equal to or smaller than EvalThreshold. (Only first criteria met) |
| SL | Significant Less Similarity | Significant compared to control sample based on statistical test at alpha level, CalculatedValue less than CriticalValue. Has less similarity to control sample, PercentEffect value larger than EvalThreshold. (Both criteria met) |
| SR | Significant to Reference | Significant when compared to reference, sample not compared to negative control. |