Box 1.

Antihypertensive drugs tested during mass spectrometry urine analysis

Drug numberDetectable medicationsDrug numberUndetectable medications
1Amiloride21Felodipine
2Amlodipine22Lercanidipine
3Atenolol23Nebivolol
4Bendroflumethiazide24Spironolactone
5Bisoprolol25Candesartan
6Bumetanide
7Diltiazem
8Doxazosin
9Enalapril (enalaprilat)a
10Furosemide
11HCTZ
12Indapamide
13Losartan
14Lisinopril
15Olmesartan
16Perindopril (perindoprilat)a
17Ramipril (ramiprilat)a
18Telmisartan
19Valsartan
20Verapamil
  • a ACE-inhibitor metabolites. HCTZ = hydrochlorothiazide.