Category: Blood

Test Details Synonyms Free Testosterone, Direct and Total. Use Evaluate hirsutism and masculinization in women; evaluate testicular function in clinical states where the testosterone binding proteins may be altered (obesity, cirrhosis, thyroid disorders). See individual test descriptions for

Test Details Use Testosterone testing is used to evaluate androgen excess or deficiency related to gonadal function, adrenal function, or tumor activity. Testosterone levels may be helpful in men for the diagnosis of hypogonadism, hypopituitarism, Klinefelter syndrome, and impotence (low values).

Test Details Synonyms Free Testosterone, Direct Use Evaluate hirsutism and masculinization in women; evaluate testicular function in clinical states where the testosterone binding proteins may be altered (obesity, cirrhosis, thyroid disorders).

Test Details Synonyms Thyroid Hormone-binding Ratio (THBR). Use Thyroid function test for the diagnosis of hypothyroidism or hyperthyroidism, used with thyroxine (T4) or equivalent to provide free T4 index, FTI. An indirect measure of binding protein, the T3 uptake reflects available binding

Test Details Use Electrolyte, acid-base balance; water balance; water intoxication; diagnose dehydration. Hypernatremia occurs in dehydration. For instance, nasogastric protein feeding with insufficient fluids may cause hypernatremia. Hypernatremia without obvious cause may relate to Cushing syndrome,

Test Details Synonyms Erythrocyte Sedimentation Rate ESR Westergren Sedimentation Rate Use Evaluate the nonspecific activity of infections, inflammatory states, autoimmune disorders, and plasma cell dycrasias.

Test Details Synonyms Measles Antibodies Use Determine status or, with paired sera, aid in the diagnosis of recent infection. Additional Information Measles (rubeola) is caused by a paramyxovirus, and despite vaccination programs has had several recent local epidemics. Revaccination appears

Test Details Synonyms RA Latex, Turbidimetry RF Titer Rheumatoid Factor (RF) Use Help in the differential diagnosis and prognosis of arthritic disorders. Additional Information Rheumatoid factors are antibodies directed against the Fc fragment of IgG. These are usually IgM antibodies, but

Test Includes Reticulocytes are expressed as a percentage in a total of 1000 RBCs. Use Evaluate erythropoietic activity which is increased in acute and chronic hemorrhage, and hemolytic anemias; evaluate erythropoietic response to antianemic therapy. Additional Information Reticulocytes

Test Details Synonyms Interferon-gamma Release Assay (IGRA) for Mycobacterium tuberculosis Use The QuantiFERON®-TB Gold test is an in vitro assay to aid in the diagnosis of both latent and active infection with Mycobacterium tuberculosis.

Test Details Synonyms Activated Partial Thromboplastin Time (aPTT). Use The aPTT is sensitive to deficiency or inhibition of factors in the intrinsic pathway. These include the contact factors; high molecular weight kininogen (HMWK), prekallikrein, and factor XII along with procoagulant factors

Test Details Synonyms PTH Whole Molecule Use Diagnosis of parathyroid disease and other diseases of calcium homeostasis; monitoring patients undergoing renal dialysis. Additional Information PTH is an 84-amino-acid peptide hormone which is responsible for the regulation of serum calcium levels