A blood test will be the beginning of detecting lead poisoning.
Brakes wear and require maintenance. They should always "work as well as they used to". When you detect a change in the braking have a trusted mechanic inspect them asap.
Faults that an auto scanner detect are faulty brakes, tire pressure problems, and air bag faults. They are meant as an onboard diagnostic system for automobiles.
Charcoal dust is usually effective to detect fingerprints. If not you could try Fingerprint spray.
If you are asking how it detects ghosts, then the answer is that is likely does not detect ghosts, as there has been no demonstration that ghosts exist, let alone that there is an effective means to detect them.
Cooling off.
emotional deflextion
Malpractice and greed on the part of some unscrupulous individuals and a lack of effective regulation to detect this malpractice.
Detect and resolve safety restrictions that prevent fully effective training of military missions.
The best and most cost effective solution is to use yellow food grade dye.
One can detect lead in a safe and effective manner by using lead testing kits that are available commercially. These kits typically involve taking a sample of the material to be tested and following the instructions provided to determine the presence of lead. It is important to follow safety precautions while conducting the test to avoid exposure to lead.
Pull over for a few moments and try some deep-breathing techniques.