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math calculations with Humulin insulin

Calculate the total quantity and the total days supply for the following drug: Humulin N (U-100); #10 mL vial; Sig: 18 units AM and 26 units PM ------------------------------------------------------------ The total quantity to be dispensed is 10 mL as stated by the doctor. The sig says: inject 18 units in the morning and 26 units in the evening 18 units + 26 units = 44 units per day Now, we need to convert 44 units (U) into milliliters (mL) The insulin ratio is 100 units per 1 mL, that is, 1 mL per 100 units x / 44 U = 1 mL/100 U x = (44 U * 1 mL) / 100 U x = 0.44 mL So, the patient injects 0.44 mL per day. The total days supply will be 10 mL divided by 0.44 mL which is 22 days. It is worth noting that Humulin insulin is an over-the-counter insulin. If the patient is just paying with cash, then the patient does not really need a prescription from the doctor. But, if the insurance company is going to be billed for Humulin insulin, then a prescription from the doctor is required.

What are the total quantity and the total days supply for the following drug: Humulin N (U-100); #10 mL vial; Sig: 25 units AM and 30 units PM for 30 days ------------------------------------------------------------ The total days supply is 30 days as stated by the doctor. In this case, the pharmacist will have to dispense enough insulin to last 30 days. The sig says: inject 25 units in the morning and 30 units in the evening for 30 days 25 units + 30 units = 55 units per day Now, we need to convert 55 units (U) into milliliters (mL) The insulin ratio is 100 units per 1 mL, that is, 1 mL per 100 units x / 55 U = 1 mL/100 U x = (55 U * 1 mL) / 100 U x = 0.55 mL So, the patient injects 0.55mL per day. In turn, 30 days * 0.55 mL = 16.5 mL The patient will inject 16.5 mL per month. But, we need to round 16.5 mL into 20 mL because each vial has 10 mL. So, the total quantity to be dispensed is 20 mL Now, we need to calculate how many vials will be dispensed. Each vial has 10 mL and then 2 vials have 20 mL It is worth noting that Humulin insulin is an over-the-counter insulin. If the patient is just paying with cash, then the patient does not really need a prescription from the doctor. But, if the insurance company is going to be billed for Humulin insulin, then a prescription from the doctor is required.

Calculate the total quantity and the total days supply for the following drug: Humulin N (U-100); #10 mL vial; 30 units BID ------------------------------------------------------------ The total quantity is 10 mL as stated by the doctor. Now, we need to convert 10 mL into units We know that the insulin ratio is 100 units per 1 mL x / 10 mL = 100 units / 1 mL x = (10mL * 100units) / 1mL x = 1000 units (which means that a 10mL vial has 1000 units) The sig says: inject 30 units twice a day The patient injects 30 units * 2, that is, the patient injects 60 units per day. The total days supply will be 1000 units divided by 60 units which is 16 days. It is worth noting that the pharmacist has used the conversion of mL into units rather than the conversion of units into mL What would be the best size of syringes for the patient to use? The patient injects 30 units. x / 30 units = 1 mL/100 units x = (30 U * 1 mL) / 100 U x = 0.3 mL = 0.3 cc (since 1 mL = 1 cc) The size of syringes will be 0.3 cc Now, we need to know what gauge the syringe shoud have. The gauge says how short the needle is. In the example above, the patient could get 30-gauge 0.3-cc syringes. The thickness of a needle is called its gauge. The higher the gauge number, the thinner the needle. (For example, a 32-gauge needle is thinner than a 29-gauge needle.) And the thinner the needle, the less the patient may feel the injection.

Calculate the total quantity and the total days supply for the following Rx: U-500 30 units sq tid #1 vial ------------------------------------------------------------ The doctor has prescribed U-500, that is, the doctor has prescribed Humulin R U-500 insulin. The ratio is 500 units per mL (500U/mL) and the vial has 20 mL of insulin. The doctor wants the pharmacist to dispense one vial, that is, 20mL In turn, the total quantity to be dispensed is 20 mL The sig says: inject 30 units subcutaneously three times daily The patient will inject 30 units three times daily, that is, the patient will inject 90 units daily. Now, we need to calculate the total days supply. The pharmacist may use either the ratio 500U/mL or the ratio 100U/mL to calculate the total days supply. Let's use both ratios in order to calculate the total days supply. Using ratio 500 units per mL (500U/mL), we need to convert 90 units into mL: x / 90U = 1mL / 500U x = (90U * 1mL) / 500U x = (90 / 500)mL x = 0.18 mL The patient will inject 0.18 mL daily. In this case, the total days supply will be 20 mL divided by 0.18 mL which is 111 days. Using ratio 100 units per mL (100U/mL), we need to convert 90 units into mL: x / 90U = 1mL / 100U x = (90U * 1mL) / 100U x = (90 / 100)mL x = 0.9 mL The patient will inject 0.9 mL daily. In this case, the total days supply will be 20 mL divided by 0.9 mL which is 22 days. It is worth noting that Humulin R U-500 requires a prescription from the doctor.

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