La Liga has not conducted a single valid anti-doping test this season after Uefa and Fifa decline to step in

Spain's anti-doping agency was declared non-compliant by Wada in March and, in a concerning twist, no valid body has undertaken testing since

Such revelations are damaging for La Liga, a competition that boasts stars like Cristiano Ronaldo and Lionel Messi (Getty)

Spanish football is approaching a year since it last carried out an anti-doping test that was valid under guidelines set by the World Anti-Doping Authority (Wada), it has emerged.

The Iberian nation's anti-doping authority, Aepsad, was declared non-compliant with Wada's anti-doping code back in March after a four-month stint on their watch list, meaning that any testing undertaken since has not conformed to the global anti-doping authorities' high standards after their testing laboratory was suspended.

While in other sports Aepsad was able to draft in assistance from governing bodies, Uefa and Fifa both declined to step in to ensure valid testing was taking place in La Liga and the Copa del Rey.

Aepsad released a statement on Thursday to defend its position:

"The exceptional political situation that Spain has survived in the last few months has prevented the implication of Law 3/2013, necessary for fulfilling the Spanish anti-doping rules and the World Anti-Doping code...

"With respect to the absence of anti-doping testing in Spanish football, Aepsad proposed to Fifa and Uefa, at the behest of Wada, the signing of an agreement in order that one of these international federations would take over the testing in Spanish football while Aepsad was non-compliant.

"Both federations declined to sign the agreement on the understanding that Fifa were limited to international football, while Uefa felt that they were limited to football clubs participating in Uefa competitions. Therefore, no agreement was signed and no international federation would assume the responsibility for anti-doping tests in Spanish football."

Aepsad were keen to point out that, despite them not being Wada-endorsed, they had still tested 57 players this season.

While Wada recognise that Aepsad was unable to implement the necessary changes in March due to the political situation in Spain - in which they went months and months without a sitting government during 2016 - it remains a huge concern that no valid anti-doping authority has been undertaking testing in La Liga.

The Spanish top flight is considered one of the world's premier football leagues and boasts many of the planet's biggest stars, including Cristiano Ronaldo, Lionel Messi and Neymar.