Subset: Observation Flag
[RESULT.OBX.8] - Result flag used to capture subjective results, as well as reasons for incomplete results.
Organization: USDA-APHIS-VS
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Code Text Coding System Comments
A Abnormal (applies to non-numeric results) HL70078  
> Above absolute high-off instrument scale HL70078  
H Above high normal HL70078  
HH Above upper panic limits HL70078  
AC Anticomplementary Activity HL70078  
< Below absolute low-off instrument scale HL70078  
L Below low normal HL70078  
LL Below lower panic limits HL70078  
B Better--use when direction not relevant HL70078  
TOX Cytotoxic substance present HL70078  
DET Detected HL70078  
INC Inconclusive HL70078  
ISL Incorrect Sample Location HL70078
  • Although PrP-res was not detected in this sample, the specimen received was not from the preferred location recommended for testing. Therefore, the significance of this result is unknown.
IND Indeterminate HL70078  
ILF-L Insufficient follicles-location HL70078
  • There was an insufficient number of follicles (less than 6) in the sampe. Additionally, the sample was not collected from the preferred location.
ILF Insufficient Lymphoid Follicles HL70078
  • There was an insufficient number of lymphoid follicles (less than 6) in the sample. Note - also use this on eyelid samples with no lymphoid follicles.
I Intermediate. Indicates for microbiology susceptibilities only. HL70078  
MS Moderately susceptible. Indicates for microbiology susceptibilities only. HL70078  
NEG Negative HL70078  
NI No Interpretation. Indicates for microbiology susceptibilities only. HL70078  
null No range defined, or normal ranges don't apply HL70078  
NSR No sample received HL70078  
NONNEG Non-negative/presumptive positive HL70078  
NSA Non-Specific Agglutination HL70078  
N Normal (applies to non-numeric results) HL70078  
NDET Not Detected HL70078
  • Analyte or organism has not been detected at levels that can be detected by the current test. It is possible to have analyte or organism present at levels below the sensitivity of the current testing or be present in tissues not tested.
NT Not tested HL70078
  • This term should be used on samples that are submitted in good condition, but are not tested because it is unnecessary to test the sample. An example where NT would be used is a case in which an additional tissue was submitted to the laboratory but was not tested.
POS Positive HL70078  
SCS PrPres (Suspect) HL70078
  • IHC staining present that is consistent with the disease tested for. This diagnosis is used in place of the term positive because an animal is only designated positive after additional testing has been completed at NVSL. Anytime this diagnosis is used, all tissues, blocks, and slides must be sent to NVSL within five days for review.
QCF Quality Control Failure HL70078  
SCR Repeat. Diagnosis is unclear for any reason and/or there is unusual staining. Only used with Scrapie reporting. HL70078  
RV Repeat/Review HL70078
  • This diagnosis is used when the diagnosis is unclear for any reason and/or there is unusual staining and the contract laboratory would like to send in samples to NVSL for review. Anytime this diagnosis is used, all tissues, blocks and slides must be sent to NVSL within five days for review. Comments describing why the sample is being sent in for review must be included on the 10-4 laboratory submission form sent to NVSL with the samples. Note - any sample that is being referred to NVSL can only have a diagnosis of either repeat or suspect. Additionally, comments can only be added to VSLS on samples that are being referred to NVSL. For example, the system won’t allow you to give a sample an ND diagnosis, then add a comment, and refer it to NVSL
R Resistant. Indicates for microbiology susceptibilities only. HL70078  
D Significant change down HL70078  
U Significant change up HL70078  
S Susceptible. Indicates for microbiology susceptibilities only. HL70078  
UNA Unacceptable HL70078
  • This term should be used on poor quality samples that are not testable due to the poor condition of the sample. Several examples would be samples with severe autolysis, samples in broken containers, samples with no identification, and other reasons. Anytime this diagnosis is used, the laboratory needs to contact the submitter or other USDA staff and discuss what was wrong with the sample so that the problem can be prevented on future samples.
SCU Unsuitable HL70078
  • Sample unsuitable for this assay.
AA Very abnormal (applies to non-numeric units, analogous to panic limits for numeric units) HL70078  
VS Very susceptible. Indicates for microbiology susceptibilities only. HL70078  
W Worse--use when direction not relevant HL70078