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.
Normal specific gravity range in urine. The normal range of specific gravity in human urine is from 1.003 to 1.030. Values outside this range may be the result of specimen dilution, adulteration or may be indicative of a number of health related problems.