i keep the report in the same folder

a year apart, reporting update from 12 months ago: retested the same supplier, result came back better, logged both, four lots before i would say anything

a result without a lot number and a purchase date is an anecdote with a pdf attached, paperwork attached

log what you expected

i told HYB about a result they would not have liked and they did not argue. credit where it is due

a lab reference number is worth including because it makes the result checkable by somebody else, lot is in the report

same lot two labs would settle it

the results in this channel skew because people test when they are suspicious. that is selection bias and it is real, not a recommendation

the same lot at two labs is the single most informative thing anyone here can pay for

thats the whole value

contradicting my own earlier one two labs on the same lot is the only comparison that has ever changed my mind about anything, the certificate said something close

does a result from an unblinded submission count for less

how many of the results in here are from people who expected bad news, if anyone has a number

pooled submissions cost less each and carry the same weight as long as the labelling was clean

i keep every report in a folder by supplier and the pattern only became visible at about lot eight