PGSN - Overview: Progesterone, Serum

Ascertaining whether ovulation occurred in a menstrual cycle Assessment of infertility Evaluation of abnormal uterine bleeding Evaluation of placental health in high-risk pregnancy Determining the effectiveness of progesterone...

CORTU - Overview: Cortisol, Free, 24 Hour, Urine

Preferred screening test for Cushing syndrome Diagnosis of pseudo-hyperaldosteronism due to excessive licorice consumption Test may not be useful in the evaluation of adrenal insufficiency.

GLP - Overview: Glucagon, Plasma

Diagnosis and follow-up of glucagonomas and other glucagon-producing tumors Assessing diabetic patients with problematic hyper- or hypoglycemic episodes (extremely limited utility)

HGH - Overview: Growth Hormone, Serum

Diagnosis of acromegaly and assessment of treatment efficacy when interpreted in conjunction with results from glucose suppression test Diagnosis of human growth hormone deficiency when interpreted in conjunction with results from growth...

FRTUP - Overview: Free Thyroxine Index (FTI), Serum

Estimating the amount of circulating free thyroxine (free thyroxine index) using the total thyroxine and thyroid binding capacity (T-uptake)

T3 - Overview: T3 (Triiodothyronine), Total, Serum

Second-order testing for hyperthyroidism in patients with low thyroid-stimulating hormone values and normal thyroxine levels Diagnosing triiodothyronine (T3) toxicosis This test is not useful for general screening of the population...

T4 - Overview: T4 (Thyroxine), Total Only, Serum

Monitoring treatment with synthetic hormones (synthetic T3 [triiodothyronine] will cause a low total T4 [thyroxine]) Monitoring treatment of hyperthyroidism with thiouracil and other anti-thyroid drugs Index of thyroid function when the...

DCORT - Overview: 11-Deoxycortisol, Serum

Diagnostic workup of patients with congenital adrenal hyperplasia Part of metyrapone testing in the workup of suspected secondary or tertiary adrenal insufficiency Part of metyrapone testing in the differential diagnostic workup of...

DHVD - Overview: 1,25-Dihydroxyvitamin D, Serum

As a second-order test in the assessment of vitamin D status, especially in patients with renal disease Investigation of some patients with clinical evidence of vitamin D deficiency (eg, vitamin D-dependent rickets due to hereditary...

T4BPE - Overview: Thyroxine-Binding Protein Electrophoresis, Serum

Explaining unusual thyroxine (T4), free T4, and thyroxine-binding globulin test results that do not correlate with the patient's clinical presentation Detecting the presence of aberrant thyroxine-binding proteins, such as abnormal forms...