Blood

Blood inside our bodies flows
To keep our tickers ticking.
We never think about it ‘til
A problem’s up and kicking.

A tiny sample might reveal
Deficiencies or glitches,
For blood cells can’t keep secrets –
They’re like adolescent snitches.

The needle hits a vein and then
The truth comes pouring out
To let the doctor know
What all the fuss was all about.

Amazingly, one little vial
Can give a needed clue,
Which was within us all along,
But hidden from our view.