B-Tetrahydrocortisol [aka 5-beta-Tetrahydrocortisol (5b-THF)] is a metabolite of cortisol.

Tetrahydrocortisone, Tetrahydrocortisol and Allo-Tetrahydrocortisol are cortisol metabolites that reflect approximately 50% of daily cortisone synthesis. These will often reflect a chronic adrenal picture if levels are out of normal limits.

Urine contains free cortisol, but it also contains many cortisol metabolites, like cortisone or 5-alpha- tetrahydrocortisol, 5-beta-tetrahydrocortisol, tetrahydrocortisone, etc.

b-Tetrahydrocortisone (b-THE) is an adrenal steroid and a cortisol metabolite. Tetrahydrocortison (THE) is a down-stream metabolite of cortisol and cortisone.

Cortisone is a pregnane steroid hormone closely related to cortisol. It is one of the main hormones released by the adrenal gland in response to stress. Cortisone suppresses the immune system, thus reducing inflammation and attendant pain and swelling at the site of the injury.

This is one of the three cortisol metabolites. The total some of the three cortisol metabolites gives us a good indication of the overall cortisol production in your body. 

Two of the 3 metabolites are the active form of cortisol (THF). The other metabolite is in the inactive form cortisone.

This particular marker (b-THE) hence is an inactive cortisol metabolite.

This is one of the three cortisol metabolites. The total some of the three cortisol metabolites gives us a good indication of the overall cortisol production in your body. 

Two of the 3 metabolites are the active form of cortisol (THF). The other metabolite is in the inactive form cortisone.

This particular marker (b-THE) hence is an inactive cortisol metabolite.

This test measures the levels of a certain type of hormone in your blood called a B-type natriuretic peptide. This test gives you information about your heart.

Providers use a BNP test to diagnose heart failure. If you already know you have heart failure, your provider may order this test to check the severity (seriousness) of your condition. They may also use this test to monitor how heart failure treatments are working. In some cases, your provider may also order it if they think you may be at higher risk of developing heart failure.

The Lyme Immunoflourescence Assay (IFA) detects antibodies (IgG IgM, IgA) against B. burgdorferi in a patient's serum. Therefore, it is useful as a screening test at all stages of the disease. 

IgM-specific antibodies are usually high during the early (or active) stage of the disease; and in some patients IgM may persist for a long time. Antibody levels tends to rise above background levels within 2-3 weeks after an infection. IgG appears later in the disease, but may remain present in low levels long after the disease is cured.

Borrelia burgdorferi is a pathogenic spirochete responsible for Lyme disease via a tick vector. This spirochete causes a characteristic annular rash, arthritis, carditis, and in late stages, encephalopathy. 

Babesiosis, a tick-borne illness caused by Babesia parasites, is commonly diagnosed using serological testing, where the B. duncani IFA (Indirect Fluorescent Antibody) IgM test plays a crucial role. This test specifically detects IgM antibodies against B. duncani, a Babesia species predominantly found in the western United States. IgM antibodies are among the first antibodies produced by the immune system when it encounters a pathogen. The presence of these antibodies is indicative of a recent or acute infection.