Drug Reagent used Linear range
(μgmL-1)
LOD
(μgmL-1)
Molar absorptivity
(L mol-1 cm-1)
Applications Ref.
Azithromycin Quinalizarin 4-20 0.35 -- Tablets 12
  Eosin Y 1-10 -- -- Human urine, plasma 13
  Rose Bengal 4-20 0.31 3.78× 104 Tablets, capsules, syrup 14
  Chloranilic acid 5-225 -- 2.4×103 Tablets 15
  7,7,8,8-tetracyanoquinodimethane 0-30 -- 2.7×104
5.0×104
Tablets 15
  Bromophenol blue 0-50 0.10 1.369×104 Tablets, syrup, Human Urine Present work
Sparfloxacin Bromocresol purple 5-25 -- 2.988×104 Tablets 16
  Bromocresol green 5-25 -- 3.152×104 Tablets 16
  Ammonium vanadate 0.8-28 -- -- Tablets, Human Urine 17
  Mo(V)-thiocyanate 10-150 9.00 62×103 Tablets 19
  p- dimethyl amino-benzaldehyde 2-80 0.22 4.9×103 Tablets, Human urine, Blood serum 20
  Bromophenol blue 10-80 0.21 3.774×103 Human Urine Present Work
Cephalexin monohydrate Molybdenum blue 0-45 -- -- Capsules 21
  Sodium 1,2-napthoquinone-4-sulphonate 1.5-34 0.49 1.79×103 Capsules 22
  p-benzoquinone 10-160 -- 1.37×103 Capsules 23
  Iodine 6-40 1.37 9.64×103 Capsules 24
  2,3-Dichloro-5,6-dicyano-1,4-benzoquinone 40-180 2.76 2.22×103 Capsules 24
  7,7,8,8-tetracyanoquinodimethane 4-12 0.23 31.90×103 Capsules 24
Table 8: Comparison of present work with reported methods.