Laboratory testing

Serotonin transporter promoter region

---

Serotonergic receptors

---

Blood-brain barrier/ P-glycoprotein

---

Cytochrome P450 enzymes

---

HLA gene testing

---

Melanocortin 4 receptor (MC4R)

---

Commercially-available pharmacogenomic tests

---

Miscellaneous

Urine drug screen according to DOT regulations

False positive urine drug screen: Principles and a table for reference

Opioids in the urine drug screen

Will zolpidem be detected on a standard urine drug screen? 

For how long are substances detected in a urine drug screen (UDS)?

What laboratory tests should a mental health clinician order and when?

Clinicians’ guide to screening tests in mental health

The 12 Sins in Laboratory Testing in Mental Health

Is it essential to be fasting for lab tests?

ICD-10 diagnostic codes for laboratory tests

What should I be doing to monitor patients who are on an antipsychotic?

Which laboratory tests in men with erectile dysfunction?

False positive elevation of plasma ammonia

Tips about Hepatic Function Tests

Elevated vitamin B12 levels are common and could be very serious

When to do an electrocardiogram (ECG or EKG)

How often should we order ECG (EKG) during treatment with a psychotropic medication?

When to measure serum levels of mood stabilizers

What lab tests should we do in patients on divalproex (Depakote)?

Serum folate is not the right test to order

Iron deficiency in mental health

24-hour urine for creatinine clearance

How to collect a 24-hour urine sample

How to interpret the BUN/Creatinine ratio when you get labs back

What is estimated GFR (eGFR)?

How to measure and interpret serum prolactin

Tips on thyroid function testing

Elevated alkaline phosphatase