I wouldn't be too concerned. I'm not familiar with how things are handled in India but I would think that reusing needles is a big 'no no' worldwide and the threat of lawsuits alone is a big enough incentive for any lab to do the right thing.
I think you can say with certainty that no medical person in the world would re-use needles.
In some areas of the world needles are sterilized after use in what is called an autoclave and re-sharpened. If the protocol is properly performed there is no hazard from re-using a needle.
Over the years the use of "one-time-use" needles has become the world-wide standard, as the expense of the needles has come down through improved manufacturing processes.
Years ago, when glass syringes were common, the barrels were always resterilized. Nowadays "one-time-use" plastic barrels are the norm.
The dangers of infection through using the same needle are now well known, and the chances are this did not happen.