nontoxic isomers that are more polar, water-soluble and therefore, can be excreted without being further metabolized by the liver. Urinary and gastrointestinal elimination remain important to the process of reducing the bilirubin load. Proper use The biliblanket setup consists of the light generator, termed the light box, the fibre-optic cable through which the light is carried, and the fiberoptic pad, which is a 25cmx13cm (10"x5") pad that is attached to the baby. The light generator stores the source of light, which is a halogen bulb. The fiber-optic cable connects the light generator to the fiberoptic pad, which contains fiberoptic fibers and usually has a disposable cover. It is important to make sure that the light-source machine is placed on a flat, level, hard surface such as a table or nightstand to ensure proper ventilation. A disposable cover is placed onto the light pad and should be changed if the cover becomes soiled. For effective therapy, the baby's skin should be directly exposed to the light pad as much as possible. The light pad should be on at all times except during baths. The light pad is usually placed on the undressed baby's back with a diaper on. Clothing may be worn, but the clothing should be placed over the light pad, and the light pad should still be in direct contact with the baby's skin. The light pad should never be placed on the baby's head. The baby can sleep, eat, or be held while the light pad is on. Recent studies from several countries show that the biliblanket setup can safely and effectively be used in the families home and since 2022 home phototherapy is recommended as an option to readmission to hospital in the american national guidelines. The biliblanket is safe and can be used for 24 hours a day as long as therapy is required. However, the duration of phototherapy will vary from individual to individual based on the baby's current condition and disease state. It will also depend on the physician's clinical judgement. Blood tests may be required daily during phototherapy to assess the bilirubin levels and determine if normal levels have been reached and whether or not phototherapy can be stopped. Once the bilirubin levels are normal, the baby's skin will return to its normal color. Side effects One common side effect that is experienced by babies who are receiving phototherapy treatment is more frequent