Double Commonwealth Games silver medallist Nikki Hamblin is racing the clock in a bid to prove she can be competitive at the London Olympics.
Hamblin has had a tumultuous season as she battles to return from an Achilles injury.
Although she qualified for the Olympics with a 1500m personal best of 4m 04.82s set in Barcelona in August, Athletics New Zealand indicated that she would have to demonstrate some form before the selectors rubber-stamped her ticket.
The selectors - convenor Graham O'Brien, Tony Rogers and Don Garland - will make two rounds of Olympic announcements, the first immediately following the national champs in March, the second wave in early July.
"The issue for the selectors is whether she has any current form," said Athletics NZ high-performance manager Scott Goodman.