Question

9. A patient’s AST value is outside of the linear range. The patient’s serum sample is diluted by taking 25 mcL of serum and 75 mcL of diluent. It is reanalyzed and the diluted value that is obtained is 200 IU. What is the actual true AST value?

Answer 1

Here, 25 mcL is added to 75 mcL dilutant so total value = 100mcL

Its value obtained as 200 IU

Let us take actual value be x

So , $\frac{1}{4}\times x= 200$

x=800 IU

The actual value of AST is 800 IU