I am studying about reference interval of hematology parameter followed CLSI guideline. Then i got some difficulties in percentage of eosinophil. I got my study subject have >0 value. But in Robust method i got minus lower limit? How it be possible? Anyone can help me to raise my lower limit?
Which analyser (or method) did you use for differential count of leukocytes?
Hi, your reference interval should be
Mean ±2. Check your mean at the end of your analysis, then the interval is -2 of the mean to +2 of the mean.
Yes, with very low values you can get a negative reference interval. I believe the standard protocol would be to simply put 0-your max (as clearly a negative result would never be encountered in the field). Eosinophils (% of WBC) are usually 0-1 ish in the species I work with.
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