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Test Details Test Includes Percentage CD4+; absolute CD4+; percentage CD8+; absolute CD8+; CD4:CD8 ratio; CBC with differential Additional Information HIV-1 infection results in a decrease of CD4 T cells, an increase of CD8 T cells, a decrease in the CD4:CD8 ratio, and a progressive destruction

Test Details Synonyms Anaerobic Culture, Abscess Anaerobic Culture, Body Fluid Anaerobic Culture, Wound Culture, Anaerobic Wound Anaerobic Culture Test Includes Isolation and identification (additional CPT coding of 87076, 87077, 87143, or other code depending on methods required) of potential

Test Details Synonyms Ascorbic Acid C, Vitamin Use Evaluation of vitamin C deficiency. Additional Information Serum levels of vitamin C are an adequate measurement of clinical status. Vitamin C is a cofactor for protocollagen hydroxylase; it promotes the conversion of tropocollagen to collagen

Test Details Synonyms 4-Androstenedione δ4-Androstene,3,17-dione.

Test Details Synonyms Biotin Use Measurement of vitamin B7 level Additional Information Biotin is a colorless, water-soluble B-complex vitamin that is also referred to as vitamin B7.1-3 Biotin functions as a cofactor for five mammalian enzymes that catalyze specific carboxylation reactions

Additional Information Reverse triiodothyronine (rT3) is an isomer of triiodothyronine (T3) with no demonstrated biological activity.1,2 The majority of rT3is produced through peripheral enzymatic monodeiodination of T4 at the 5 position of the inner ring of the iodothyronine nucleus of thyroxine (T4)

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

Test Details Synonyms Biotin Use Measurement of vitamin B7 level Additional Information Biotin is a colorless, water-soluble B-complex vitamin that is also referred to as vitamin B7.1-3 Biotin functions as a cofactor for five mammalian enzymes that catalyze specific carboxylation reactions

Test Details Synonyms Free T3 T3, Free Use Evaluate thyroid function and assess abnormal binding protein disorders.

Additional Information Reverse triiodothyronine (rT3) is an isomer of triiodothyronine (T3) with no demonstrated biological activity.1,2 The majority of rT3is produced through peripheral enzymatic monodeiodination of T4 at the 5 position of the inner ring of the iodothyronine nucleus of thyroxine (T4)

Test Details Synonyms Tobacco Use Measurement of nicotine and its metabolites to monitor success of smoking cessation programs, detect passive exposure, and evaluate nontobacco nicotine exposure.

Test Details Synonyms Chickenpox Titers Herpes Zoster Antibodies VZV IgG Use Diagnose VZV infection; determine adult susceptibility to infection. Additional Information Although most cases of varicella or zoster are clinically unambiguous, serology may be occasionally useful in the differential