| Value Qualifier Code |
Value Qualifier Name |
| $ |
incorrect sample container |
| & |
biological organism estimated as dominant |
| ( |
blank greater than the sample-specific Critical Level |
| ) |
sample-specific MDC (ssMDC) above contractual MDC |
| * |
sample was warm when received |
| + |
improper preservation |
| / |
matrix spike (MS) recovery outside of acceptable range |
| = |
negative result may indicate potential negative bias |
| @ |
holding time exceeded |
| a |
value extrapolated at high end |
| b |
value extrapolated at low end |
| c |
see result laboratory comment |
| d |
sample was diluted |
| e |
see result field comment |
| f |
sample field preparation problem |
| g |
count less than 0.5 percent |
| h |
compound identification verified by alternate method |
| i |
result may be affected by interference |
| j |
count greater than or equal to 15 percent (dominant) |
| k |
counts outside acceptable range |
| l |
sample preparation problem |
| m |
value is highly variable by this method |
| n |
below the reporting level but at or above the detection level |
| o |
result determined by alternate method |
| p |
value reported is preferred |
| q |
insufficient sample received |
| r |
value verified by rerun, same method |
| s |
instrument sensitivity problem |
| t |
below the detection level |
| u |
value reported not confirmable, interference |
| v |
analyte detected in laboratory blank |
| w |
high variability, questionable precision and accuracy |
| x |
interference from sample matrix |
| y |
sample variability described in comment |
| z |
value verified by rerun, alternate method |
| \ |
lab control sample (LCS) recovery outside of range or criteria |
| ^ |
yield outside of contractually acceptable range |
| ~ |
duplicates do not check (not within the acceptance limits) |
