When should the Phlebotomist draw a trough level?

Which of the following tests will assess Peak and Trough level of an antibiotic? 

Diabetes Mellitus is a Disease of which of the following? 

Question 2 of 3 questions about the titration of 10.00 mL of the 0.1600 M histamine (C5H9N3, a weak base with pKa = 6.72; pKa is NOT a typo) with 0.2000 M HI. Continuing the titration: an additional 6.00 mL HI solution is added (total addition of HI is 8.00 mL). What is the pH after this addition? Do not type units. Do not use units.

If a patient came to the lab to have his or her blood drawn for anemia, what test would likely be ordered?

Clathrin-coated vesicles bud from the plasma membrane when adaptor proteins, clathrin, and dynamin-GTP are present. Could clathrin-coated vesicles assemble if adaptor proteins were absent?  (‘Yes’ or ‘no’ answer only)

A STAT Potassium level is ordered, which of the following tubes would the Phlebotomists use?

A patient had a STAT order for Potassium, how long would the results take to be available?

In regards to Hemostasis (natural control of bleeding) process, Which of these events occurs FIRST ?

Which of the following is the last event of Hemostasis ?