What is the primary difference between serum and whole blood?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Biology Mcqsbiology-mcqs
Published
28 Feb 2021
Last updated
28 May 2026

Browse all Biology Mcqs

Choose the correct answer

Explanation

Serum is the fluid portion of blood after coagulation, meaning it lacks clotting proteins such as fibrinogen, which are present in plasma and whole blood. Therefore, serum differs from blood mainly by the absence of clotting factors.

SolveExam — free MCQs and past papers for Pakistan government job tests. Content is for educational practice only.