Can the use of methamphetamine cause leukocytosis?

Yes. Any stimulant, and even the hormones we produce ourselves under stress (adrenaline, noradrenaline, dopamine) can cause the release of white blood cells from the walls of our blood vessels. This occurs with cocaine, amphetamine, methamphetamine, and can even happen when prescription stimulants are used. It is a sign that the drug is having adverse effects on your body. Stop - get help if needed.
Yes. Methamphetamine can cause leukocytosis (high numbers of white blood cells circulating in the blood), hyperglycemia (high blood sugar), high CPK (muscle enzymes leaking from damaged muscle cells), high liver enzymes (leaking from damaged liver cells), low sodium (abnormally low sodium level in the blood), etc...