Diagnostic test- sample size

#1
Hi I wish to work out a sample size to compare two types diagnostic test for accuracy (Sensitivity and specificity). The diagnostic tests are similar in design and both tests would be performed on each patient. I found a formula which i think is correct however it says it should be used for estimating sample size for two independent diagnostic test with "unpaired design".

My question is, are my diagnostic tests concidered unpaired or paired?

Cheers