How is Testosterone Measured in a Blood Test?


If you are wondering how is testosterone measured in a blood test, read on. Testosterone levels fluctuate throughout the day, but are highest in the morning. They are measured in picograms per milliliter (pg/mL), and the most accurate test uses tandem mass spectrometry, or TMS. While a simple blood test may not give the most accurate result, it can help diagnose your condition.

Testosterone levels fluctuate throughout the day

Men’s testosterone levels fluctuate throughout the day, and a blood test to check them is not always accurate. Testosterone levels are highest first thing in the morning, and fall in the afternoon. A low reading on a test should prompt a follow-up visit, and an additional blood draw is needed to confirm the results. Whether a blood test is accurate depends on the source.

They are highest in the morning

The first few hours of the day are when your body’s testosterone levels are at their highest, so it makes sense that you would be most amorous in the morning. In fact, research has shown that men tend to be more arousing during their first hour of sex, and a five-hour sleep cycle can increase testosterone levels by 15 percent. Unlike women, however, who have lower testosterone levels when they wake up, male and female testosterone levels are completely out of sync throughout the day.

They are measured in picograms per milliliter (pg/mL)

The most common method of measuring testosterone levels in blood tests is by measuring the total concentration of the hormone. This method is highly sensitive, but also requires time-consuming steps such as purification with column chromatography and radioimmunoassay. However, it is possible to use a more sensitive method, known as an automated immunoassay, which offers greater sensitivity. Depending on the level of free testosterone in a blood sample, testing for this hormone may require extremely sensitive methods, such as equilibrium dialysis and ultracentrifugation. Regardless of the method chosen, a responsible physician should listen to the patient’s symptoms and formulate a treatment plan based on scientific and humanitarian principles.

They are most accurate with tandem mass spectrometry

Current methods of measuring testosterone are not as accurate as liquid chromatography-tandem mass spectrometry. This article was published in the Journal of Endocrinology and Metabolism in 2004. To find out more about the methods and how to order them, you can visit Lab Tests Online. It is possible to order testosterone tests for men, women, and children.

They are most common in asymptomatic men

If your doctor suspects that you may be suffering from low testosterone, he or she will likely order several tests and monitor your levels for a while. Normal levels of testosterone are between 300 and 1,000 nanograms per deciliter, and as many as 40% of men over age 45 have low levels. If you notice that your testosterone level is low, it’s not necessarily a sign of serious health problems. To be safe, it’s best to get several tests over a few weeks or months to see if your levels go down more. And even then, if your results are low, you may not need to worry about it.

They can be used to screen for health problems

A physician can use a testosterone blood test to diagnose a hormone disorder, monitor a Testosterone Replacement Therapy, or detect an excess or deficient level of the hormone. Because testosterone affects many other hormones, it’s an important screening tool for a variety of medical conditions. Testosterone levels in the blood can influence sex drive, fertility, and overall health. A blood test for testosterone can help your doctor spot the problem before you experience any negative effects.

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