A brain natriuretic peptide (BNP) test measures the amount of the BNP hormone in your blood. BNP is made by your heart and shows how well your heart is working.Normally, only a low amount of BNP is found in your blood.uide. A brain natriuretic peptide (BNP) test measures the amount of the BNP hormone in your blood. BNP is made by your heart and shows how well your heart is working. Normally, only a low amount of BNP is found in your blood.
Bacterial cultures can be preserved for long by suspending in glycerol broth and storing at -20 to -70 degree Celsius. The protocol as below: To 0.85 ml of bacterial culture, add 0.15 ml of sterile glycerol (sterilized by autoclave, final glycerol concentration : 15%, v/v).
Culture showing no bacterial growth will be. reported after 48 hours. Complete reports of cultures with anaerobic bacteria. may take as long as 5 days after receipt of culture, depending upon the nature. of the organisms isolated. Final report is at 5 days. Specimen: Pus tissue or other material properly obtained from an abscess, biopsy, aspirate, drainage, exudate, lesion, or wound.