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

TRYPU - Overview: Tryptophan, Random, Urine

Aiding in the screening and monitoring of Hartnup disease

ROC - Overview: Rubeola (Measles) Antibodies, IgG and IgM, Spinal Fluid

Diagnosing central nervous system rubeola (measles) virus infection and/or subacute sclerosing panencephalitis

MITOP - Overview: Mitochondrial Full Genome Analysis, Next-Generation Sequencing (NGS), Varies

Diagnosis of the subset of mitochondrial diseases that results from variants in the mitochondrial genome A second-tier test for patients in whom previous targeted gene variant analyses for specific mitochondrial disease-related genes were...