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

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

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

PETH - Overview: Phosphatidylethanol Confirmation, Blood

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

HGUOE - Overview: Mercury Occupational Exposure, Random, Urine

Detecting mercury toxicity due to occupational exposure

CYCPK - Overview: Cyclosporine, Peak, Blood

Monitoring whole blood peak cyclosporine concentration during therapy, particularly in individuals coadministered cytochrome P450 (CYP) 3A4 substrates, inhibitors, or inducers Adjusting dose to optimize immunosuppression while minimizing...

SCCNP - Overview: Severe Congenital and Cyclic Neutropenia Gene Panel, Varies

Providing a genetic evaluation for patients with a personal or family history suggestive of severe congenital neutropenia and/or cyclic neutropenia Establishing a diagnosis of an inherited congenital neutropenia and, in some cases,...