Lamar Odom has had a drug problem for the last two years

We’ll begin this report by stating the obvious, which is that Lamar Odom played in the NBA for the Clippers last season without incident, and has not failed a league-mandated drug test since 2001.
With that being said, we also cannot ignore the report that is out there.
TMZ, an organization that is admittedly more interested in Odom’s relationship with Khloe Kardashian than they are with his NBA career, is reporting that Odom’s “hardcore drug abuse” is the reason that the marriage between Odom and Kardashian is “in crisis.”
From TMZ’s report:

The marriage of Khloe Kardashian and Lamar Odom is in crisis, and TMZ has learned … the core reason is hardcore drug abuse.
Multiple sources familiar with the situation tell TMZ … Lamar has had a problem for 2 years. It got so bad, last August Khloe pressured Lamar to go to rehab. Lamar went to a facility in San Diego, but he was so resistant Khloe hired private investigators to secretly stand guard at the rehab place to make sure he didn’t leave. The P.I.s stood guard 24/7.
We’re told the situation has become dire. Sources tell us … within the last 2 days, the entire family staged an intervention, trying to convince Lamar to go back to rehab, but he wouldn’t have any of it.

These are obviously serious allegations, especially where Odom’s NBA career is concerned. But again, he hasn’t failed an NBA drug test, so no matter how credible the sources, it’s all just hearsay to a certain extent.
In case you’re curious, here’s how the league’s drug testing program is laid out, via Larry Coon’s CBA FAQ:

Testing falls into two categories: reasonable cause and random. Reasonable cause testing occurs when the league or players association provides the program’s independent expert with information about a player’s use, possession or distribution of prohibited substances, and the expert believes that reasonable cause exists to order testing. If reasonable cause is found to exist, the player can be tested without notice up to four times in a six week period. Players can be subjected to random testing up to four times during a season and up to two times during an offseason (offseason testing is conducted for SPEDs and diuretics only).

To summarize, players are tested up to six times per year, although the offseason tests are only looking for steroids, masking agents, or performance-enhancing drugs.
Odom is still a free agent, and these allegations may be the primary reason why if the teams that are interested are aware of these alleged issues. The Clippers were the team most recently reported as having interest.

via TMZ