The cause of cluster headaches is unknown. They tend to run in families, which suggest genetics may play a role. They may be triggered by changes in sleep pattern and by certain medications. Symptoms of a cluster headache include unilateral pain in the face and head that is sharp in quality and very short in duration.
The normal temperature of human urine ranges from 94Â°F to 96Â°F (about 35 Â°C). The temperature of drug test sample must be measured during first 4 minutes after it was received, as it changes depending on ambient temperature. Acceptable range is from 90 Â°F to 100 Â°F (32 Â°C - 38 Â°C) , any sample with a temperature out of this range will immediately fall under suspicion.
To find out at what temperature urine freezes, I went to the internet. There I found a couple different answers: -5Â°C (Itâs about 2/3 of the way down that page) and -120Â°C.Iâm pretty sure the -120Â°C is wrong.I did found actual science dealing with freezing urine, but most of the sites I found dealt with freezing âcleanâ urine so people could use it to pass drug tests.ecently, I was revising a section of a novel Iâm working on. Itâs set a few centuries after a nuclear war. All the ash and smoke has blocked the sun, leaving the Earth frozen in a nuclear winter.