Before starting the test, you will need 365 nm UV light. You cannot use 395 nm light, for example, as it is not UV light—it's akin to using red light instead of green light. LabMax has specifically designed and manufactured 365 nm UV lights to ensure compatibility with this test. Many of the so-called black lights sold on Amazon and other platforms are often 395 nm lights.

In this test, the initial color in vial A is red-brown, while vial B is orange-brown for GSO oil and lighter for MCT oil. For example, trenbolone will appear bright green. Each vial contains different test agents that react differently to various chemicals. Any discoloration in vial A or vial B may indicate contamination, so both test vials are necessary to confirm the presence of steroids and assess their quality.

Some steroids will produce different initial colors in vial A, which can help distinguish between them. For instance, Nandrolone decanoate (oil-based) appears matte green under UV light when using GSO and Arachis oil, but shows a lighter green with MCT oil. The color coding for NPP is significantly different, which makes it easy to distinguish between Deca and NPP.

The type of oil used as a carrier does not affect whether the sample will fluoresce if a hormone is present. However, the intensity of the fluorescence may vary depending on the oil, as different oils absorb and reflect light in different ways.

Initial colors after dropping sample, please note it means nothing yet until we do UV test.

Notice there is little initial color change for raw powder, a little faint yellow.

GSO oil under 365 UV light, left vial A, right vial B.

GSO oil under 365 UV light, notice that it appears more dark yellow in dark room.

MCT oil under 365 UV light, left vial A, right vial B.

MCT oil under 365 UV light, left vial A, right vial B

Raw powder under 365 UV light, left vial A, right vial B.

Raw powder under 365 UV light, left vial A, right vial B.