Inaccurate?

Discern Bloodline

(Races of Destiny)

Divination
Level: Bard 1, Sorcerer 1, Wizard 1,
Components: V, S, M,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature per round
Duration: Concentration, up to 1 round/level
Saving Throw: Will negates
Spell Resistance: Yes

The caster can instantly tell the race of the targeted individual, plus any inherited templates possessed by the target (such as celestial or half-dragon).
Each round that the caster remains concentrating he can determine the race and inherited templates of another target.
Material Component: A drop of blood.