# (4) You are using ELISA analysis to compare levels of sTfR before and after a treatment....

###### Question:

(4) You are using ELISA analysis to compare levels of sTfR before and after a treatment. Compared to the baseline measurement, the endline measurement has an increased pixel intensity. What can you conclude? (2pts) a) If it was a direct ELISA, the amount of sTfR in the plasma decreased. b) If it was a sandwich EISA, the amount of sTfR in the plasma decreased. c) If it was a sandwich ELISA, the amount of sTR in the plasma increased d) If it was a competitive ELISA, the amount of sTfr in the plasma increased

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