PETH - Overview: Phosphatidylethanol Confirmation, Blood

Verifying abstinence or use of ethanol, especially in liver transplant candidates/patients

POSA - Overview: Posaconazole, Serum

Monitoring posaconazole therapy

HPP - Overview: Pancreatic Polypeptide, Plasma

Detecting pancreatic endocrine tumors Assessing vagal nerve function after meal or sham feeding

FRT4 - Overview: T4 (Thyroxine), Free, Serum

Evaluating suspected thyroid function disorders using free thyroxine measured together with thyroid-stimulating hormone

TLU - Overview: Thallium, 24 Hour, Urine

Detecting toxic thallium exposure in 24-hour urine collections

THEO - Overview: Theophylline, Serum

Assessing and adjusting theophylline dosage for optimal therapeutic level Assessing theophylline toxicity

VLTB - Overview: Volatile Screen, Blood

Detection and quantitation of acetone, methanol, isopropanol, and ethanol in whole blood Quantification of the concentration of ethanol in blood that correlates with the degree of intoxication Evaluation of toxicity to the measured...

VITA - Overview: Vitamin A, Serum

Diagnosing vitamin A deficiency and toxicity Monitoring vitamin A therapy

TLUCR - Overview: Thallium/Creatinine Ratio, Random, Urine

Detecting toxic thallium exposure in random urine specimens

TOPI - Overview: Topiramate, Serum

Monitoring serum concentrations of topiramate Assessing compliance Assessing potential toxicity