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Does a positive presumptive test mean that the water is absolutely unsafe to drink?
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- Does a positive presumptive test mean that the water is absolutely unsafe to drink? ExplainA sample from a 65-year-old man was brought tothe lab at 9am from a private clinic. Serumpotassium is 8.5 mmol/L. The test was repeatedand the same result is obtained. All laboratorychecks have been carried out and the result isanalytically valid. The doctor is called via telephoneand he reveals that the sample was taken at 4pmthe previous day by the nurse. a) Comment on the value of potassium obtainedb) What could possibly be the cause for such resultsobtained?c) What course of action would you recommend?Explain the clinical significance and its normal and abnormal interpretation that could be associated with each reagent on the urine test strip .
- Explain the emulsions of: 1. water mix with coconut oil 2. Egg albumin solution with coconut oil 3. water mix with coconut oil and liquid soapJoseph is sick with tuberculosis and sneezed mucus all over his grandsona s teddy bear. The grandson now has tuberculosis. The teddy bear acted as a O transmitter O fomite O vector O host O reservoirDescribe the process of qualitative water test for coliform contamination. If shown EMB plates, be able to determine if coliforms are present or not.
- The steps to convert chaulmoogra oil into an injectable treatment are: I. extraction II. saponification III. hydration IV. acidification V. esterificationA student performs a serial dilution but is not careful about the correct procedures for using the pipet and volumetric flask. Explain how the following errors would affect the concentrations of the diluted solution: a) The pipet is rinsed with water, but not with the solution that is measured. b) The student uses the rubber bulb to force out the liquid remaining in the tip of the pipet into the volumetric flask. c) After carefully mixing the diluted solution in the volumetric flask, the student pours the solution into a beaker that was not carefully rinsed with solution.A physician orders 1800 mL of lactated Ringer’s solutions to be administered over a 14 hour period. The IV is calibrated to deliver 12gtt/mL. How many drops per minute should the patient receive
- Describe the proper technique for performing reagent strip testing for urine.What is the preferred specimen type for lipid studies in a clinical setting? EDTA, Serum, 24 hour urine, Sodium fluoride?Is it safe to use 100g of Lye (NaOH) as a disinfectant at homes? Justify your claim by computing the percent composition. Claim: Yes/No Solution: