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Common medicines that interfere with clinical test results

Common medicines that interfere with clinical test results

  • Time of issue:2022-11-04
  • Views:

(Summary description)The purpose of a fasting blood test is to verify or rule out a disease, and certain medications being taken may interfere with the test results and need to be discontinued for fasting tests. The following are some of the common drugs that can interfere with clinical test results:

Common medicines that interfere with clinical test results

(Summary description)The purpose of a fasting blood test is to verify or rule out a disease, and certain medications being taken may interfere with the test results and need to be discontinued for fasting tests. The following are some of the common drugs that can interfere with clinical test results:

  • Categories:Blogs
  • Author:AIVD
  • Origin:
  • Time of issue:2022-11-04 15:06
  • Views:
Information

The purpose of a fasting blood test is to verify or rule out a disease, and certain medications being taken may interfere with the test results and need to be discontinued for fasting tests. The following are some of the common mddicines that can interfere with clinical test results:

 

 

Medicines that affect the results of routine blood tests

 

1. Penicillins, cephalosporins, enalapril, cloxacin potassium, terazosin, ribavirin, etc. can cause low hemoglobin test results and false anemia.

 

2. Sulfonamides, quinolones, anti-mycobacterial drugs, piperacillin, cephalosporins, phenytoin sodium, gemifibezil, lamotrigine, gabapentin, glibenclamide, and antineoplastic drugs can reduce the number of white blood cells.

 

3. Chloramphenicol, sulfonamides, quinolones, anti-mycobacterial drugs, piperacillin, cephalosporins, carbamazepine, phenytoin sodium, etc. can reduce the platelet count.

 

 

Medicines affecting lipid test results

 

1. Vitamin A, vitamin D, vitamin E, oral progesterone contraceptives, testosterone, anabolic hormones, glucocorticoids, epinephrine, phenytoin sodium, hydrochlorothiazide, furosemide, phenytoin, aspirin, indomethacin, etc., can increase the cholesterol test value.

 

2. p-Aminosalicylic acid, kanamycin, erythromycin, isoniazid, anandamide, vitamin B6, vitamin C, clofibrate, phenelzine, compound salvia, sodium ferulic acid, phenolsulfonamide, and nitroglycerin can lower the cholesterol test value.

 

 

Medicines affecting blood glucose test results

 

1. Dextran, vitamin D, niacin, sodium p-aminosalicylate, phenytoin sodium, chlorpromazine, morphine hydrochloride, pethidine, caffeine, pautazone, reserpine, methyldopa, furosemide, hydrochlorothiazide, colistin, acetazolamide, epinephrine, glucocorticoids, sodium (left) thyroxine, etc. may increase blood glucose.

 

2. Propylthiouracil, methimazole, epinephrine, hydrocortisone, oral progesterone contraceptives, androgens, erythromycin, lincomycin, atropine, guanethidine, insulin, bicoumarin, etc. can lower blood glucose.

 

 

Medicines that affect liver function test results

 

1. Oral contraceptives, penicillins, aminoglycosides, macrolides, sulfonamides, antiarrhythmics, antiepileptics, antithyroid drugs, antituberculosis drugs, antipyretics, pentamidine, etc. can increase glutamate and glutamic acid transaminase.

 

2. Rifampin, isoniazid, sulfonamides, salicylates, indomethacin, anandamide, pautazone, tetracycline, erythromycin, phenothiazines, etc. can increase the value of liver function tests (blood bilirubin and urinary bilirubin).

 

3. Aspirin, aminopyrine, captopril, and cyclosporine can lower the value of the urinary bilirubin test.

 

4. Mercaptopurine impairs liver function, and jaundice occurs.

 

 

Medicines that affect the results of renal function tests

 

1. Chloral hydrate, guanethidine, sulfonamides, aspirin, protamine, indomethacin, etc. can increase urea nitrogen.

 

2. Penicillins, sulfonamides, aspirin, theophylline, hydrochlorothiazide, furosemide, etc. can increase the value of uric acid.

 

3. Aspirin, pautazone, indomethacin, anandamide, cephalosporin, meclofenoxate, etc. can increase the creatinine value.

 

 

Medicines affecting blood sedimentation test results

 

1. Aspirin can reduce the sedimentation rate of red blood cells

 

2. Dextran, oral contraceptives, gammaglobulin preparations, vitamin A, dicoumarol, cephalexin, etc. may increase the erythrocyte sedimentation rate test value.

 

 

Medicines that affect the results of blood and urine tests

 

1. Penicillins, sulfonamides, etanercept, hydrochlorothiazide, furosemide, spironolactone, acetazolamide, propranolol, vitamin C, etc. may increase the blood uric acid test value.

 

2. Probenecid, allopurinol, chlorpromazine, prednisone, etc. can lower the value of the uric acid test.

 

 

Medicines that affect urine test results

 

1. Penicillin, cephalosporins, sulfonamides, vitamin C, aspirin, ampicillin, etc., can cause a false positive urine sugar test.

 

2. Penicillin, gentamicin, kanamycin, ampicillin, sulfonamides, furantoin, fenadine, iodine-containing contrast agents, etc. can cause false positives for urine proteins.

 

3. Rifampin can make the urine orange-red; vitamin B2, vitamin B complex, and flavopiridol make the urine yellow; phenytoin sodium, chlorpromazine, phenolphthalein tablets, and fenbutrazine make the urine red; aminoglutethim makes the urine blue with blue fluorescence; furazolidone and furantoin make the urine dark yellow or brown.

 

 

Medicines that affect the results of fecal occult blood test

 

1. Colchicine, iodine, and other drugs can make the fecal occult blood test falsely positive.

 

2. Large amounts of vitamins can cause a false negative.

 

 


 

 

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