29. Serum-separating tubes or tiger-striped tubes contain:

a. Heparin

b. EDTA

C. O No additives

d. O Clot enhancers

'The answer is D, Clot Enhancers.

Explanation:

This tube is a type of specimen collecting tubes used for collecting serum. It does not contain am anticoagulant but contains a clot activator and a special gel that separates blood cells from serum. The blood samples are then centrifuged allowing clear serum to be removed for testing.