A patient has a history of mild hemorrhagic episodes. Laboratory results include a prolonged prothrombin time and activated partial thromboplastin time. The abnormal prothrombin time was corrected by normal and adsorbed plasma, but not aged serum. Which of the following coagulation factors is deficient?

In a disk diffusion susceptibility test, which of the following can result if disks are placed on the inoculated media and left at room temperature for an hour before incubation?

In which of the following conditions would a NORMAL level of creatine kinase be found?

Following repeat exposure to an antigen, rapid antibody production to an elevated level that persists for a long period of time is called:

The most serious transfusion reactions are due to incompatibility in which of the following blood group systems?

In addition to the sperm count in a fertility study, analysis of seminal fluid should also include:

Which of the following represents characteristic features of iron metabolism in patients with anemia of a chronic disorder?

The autoclave method of sterilization:

Which of the following is characteristic of Bernard-Soulier syndrome?

In performing a spinal fluid protein determination, the specimen is diluted 1 part spinal fluid to 3 parts saline to obtain a result low enough to measure. To calculate the protein concentration the result must be: