Atomically, no. Mercury's atomic weight is 200.59 whereas Lead's atomic weight is 207.2. So basically, if you had the exact same amount of Lead and Mercury, lead is heavier.
The sex hormone binding globulin (SHBG) test may be used to help evaluate men for low testosterone and women for excess testosterone production. It may be ordered in conjunction with other tests to evaluate the status of a person's sex hormones.SHBG is a protein that binds tightly to the hormones testosterone, dihydrotestosterone (DHT), and estradiol (an estrogen). In this bound state, SHBG transports these hormones in the blood as biologically inactive forms.HBG is ordered primarily when the total testosterone results do not seem to be consistent with clinical signs and symptoms, such as infertility, decreased sex drive, and erectile dysfunction in men or infertility, irregular menstrual periods, and excess facial and body hair in women.
This is typically done in a sleep lab, requiring the patient to spend the night in-lab, while the polysomnography (PSG) equipment records his/her physiological data. However, today with technological advancements a polysomnograpy can be performed at home and is called home sleep testing (HST) or a home sleep study. What are the benefits of Home Sleep Testing? The patient self-administers the home sleep test, and is able to spend the night in the patientâs own bed in familiar surroundings (reducing first night effect).