it was shown that quantitative assays of t4 in blood serum within clinically significant ranges of the hormone concentration are possible at 1:5000 final dilution of the antiserum , the [ 125i ] t4 activity of 20 000-30 000 imp/min per a specimen and 5 per cent content of the blood serum in the analytical specimen .
C0392762
quantitative
C1514721
ranges