The white substance cops found in Marcus Jordan‘s pocket during his DUI arrest was determined to be ketamine — NOT cocaine — TMZ Sports has learned.

Cops conducted a field test on the powder during 34-year-old Jordan’s Feb. 4 traffic stop … and while initial testing resulted in a positive reading for cocaine, the Florida Department of Law Enforcement also did further tests, which concluded it was actually ketamine.

Considering the two substances feature the same color and texture, ketamine can often yield a positive cocaine reading … so it isn’t out of the ordinary, we’re told.

The State Attorney’s office made sure to switch the drug designation … but other than that, it all remains the same with the original charge.

It could actually benefit Jordan … as cocaine is a Schedule II drug, and ketamine is Schedule III in Florida.

Days after the arrest, Jordan entered a not guilty plea in the case.

Jordan’s been mostly tight-lipped over the run-in with cops … only thanking those who reached out to him in the days following the arrest.

Jamie Foxx was thriving “in living color” when the “Jason’s Lyric” film was released … but he made sure to be front and center to soak up the live rendition in the new play!!!

The Oscar winner was at The Orpheum Theater in DTLA on Saturday with his daughter Anelise Bishop and several other family members to check out “Jason’s Lyric Live.”

We’re told Tyrin Turner, who stars as Joshua in the play, invited Jamie personally to the show, and Jamie bought tickets for his family of 10.

We recently spoke to Treach, who reprises his role as “Alonzo” in the film, and he told us he had to bring new skills to the play — like adapting his Naughty By Nature rapping vocal control to the mix.

NFL star Solomon Thomas is used to the Jets, but he’s enjoying a different form of transportation this week — cruising around on a fancy yacht in St. Barts with his stunning girlfriend.

The 29-year-old New York defensive tackle was spotted making the most of his offseason near the Caribbean island alongside Kaylie Alyson … with both ditching their clothes for some bathing suits.

They looked happy as ever as they had their fun in the sun — which included lounging around on a raft and downing some drinks on the deck.

Thomas — who has made $38.3 million in his eight seasons in the league — certainly has the funds to enjoy himself and bring some company along … and after the Jets’ disappointing season, it’s nice to see him move past it with some R&R.

Thomas just completed his third season in the Big Apple — prior to that, he played out west for the San Francisco 49ers and Las Vegas Raiders.

As for his relationship, they went public together last year … and whatever they’re doing to keep the love alive, it’s working!!