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When should Gentamycin peak and trough level be drawn?

Trough levels are typically drawn 30 minutes before the infusion of gent and peak level drawn 30 minutes after the infusion is complete. Usually this is done with the 3rd or 4th dose of gent.


What is the ratio of blood to the blood culture bottles?

To increase positive cultures more blood should be drawn. For adults the amount of blood that should be drawn is 20 ml which is 10 ml per bottle. The ratio is 1 to 5 to 1 to 10.


What color tube is blood cultures drawn in?

Blood cultures are typically drawn in yellow or gold-top tubes, which contain a special additive that prevents clotting and supports bacterial growth for culture testing. It's essential to follow the specific protocol and use the correct color tube to ensure accurate results and prevent contamination.


Is airobic blood culture first?

Yes, aerobic blood cultures are typically drawn first in the blood culture process. This is because many common pathogens that cause bloodstream infections are aerobic bacteria, which require oxygen to grow. Collecting aerobic cultures first helps ensure the detection of these organisms before any potential contamination occurs during the collection of anaerobic cultures. Following aerobic cultures, anaerobic blood cultures can be obtained to identify organisms that thrive in low-oxygen environments.


What region of the body is blood normally drawn from?

Blood is normally drawn from the anticubital region of your body.


How long do you fast before having blood drawn?

It rather depends on why blood is being drawn?


Are blood gases usually drawn from a vein in the arm?

No Blood gases are measured to determine the oxygen concentration in the arterial blood. Therefore the blood must be drawn from an artery.


Are blood gases usually drawn from veins in the arm?

No Blood gases are measured to determine the oxygen concentration in the arterial blood. Therefore the blood must be drawn from an artery.


Can having your blood drawn cause a blood clot?

Yes, but it's incredibly rare and harmless, since blood is drawn from small surface veins.


Can having blood drawn cause a blood clot?

Yes, but it's incredibly rare and harmless, since blood is drawn from small surface veins.


Why are aerobic cultures drawn before anaerobic cultures?

Aerobic cultures are typically drawn first because aerobic bacteria are more likely to be present in the sample and grow faster than anaerobic bacteria. This allows for quicker identification and treatment of potential infections.


Why should blood not be drawn routinely from above an iv infusion site?

When asking why blood is drawn 'below' an IV site, it is presumed that this means distal (or further from the heart) when compared to the IV. The reason for drawing blood distal to the site of IV insertion is simple. When venous blood returns to the heart, administration of medications, electrolytes, and fluids is often through the IV. Therefore, we want to obtain blood which has not yet been affected by the medication or fluids given to the patient through the IV. For example, if a patient's blood magnesium levels are low, and we are giving therapeutic magnesium to increase these levels, we would want to monitor the effect of our treatment. Therefore, we would want to see the effect of magnesium infusion at a site without interference by the magnesium being infused through the IV. Therefore, we measure distal to the site of the IV, so that our blood sample represents the body's general levels magnesium, without influence from the IV line.