Leo was indicted on several charges of aggravated rape, breaking and entering, and larceny. At his arraignment, a judge in the Superior Court set bail in the amount of $5,000,000, with surety, or $500,000 cash, without prejudice. See G. L. c. 276, § 57. The following month, a hearing was held before a second judge on Leo’s request to reduce his bail to $200,000, with surety, or $20,000 cash. The judge refused to reduce the bail on the sole basis that Leo posed a suicide risk, and thus presented a flight risk. Several months later, Leo again sought a reduction in his bail in the Superior Court, this time to $50,000 cash, on the ground that he no longer posed a suicide risk. He submitted “progress notes” from a social worker who apparently interviewed him while he was in custody, and who concluded that he presented “[n]o imminent risk of harm to self/others.” A third judge in the Superior Court denied the motion, concluding: “Denied ■— declined to act — no change in circumstances.”

Thereafter, Leo filed his petition in the county court seeking a reduction in his bail to $50,000 cash. Again he argued, based on the same social worker’s progress notes, that he was no longer a suicide risk. He further claimed *1026that because he no longer posed a suicide risk, his bail was excessive. At the hearing before the single justice, Leo asserted that he was successfully being treated for major depression while in custody, and that his mother was willing to post $50,000 bail on his behalf. The single justice concluded that the lower court had not erred in declining to reduce the bail, see Commesso v. Commonwealth, 369 Mass. 368, 373-374 (1975), because, despite Leo’s reported success in addressing his depression while in custody, “that [was] no indicator, at least not on the[] materials [before the single justice], that the treatment and medication could realistically be continued on the outside in the absence of that [custodial] setting. Whether he would commit suicide or whether he would engage in some other desperate measure to avoid capture or avoid facing up to these charges, it is still a very significant flight risk that is presented here.”

On appeal, Leo claims that (1) $500,000 cash bail is unwarranted because, based on the social worker’s progress notes, he demonstrated that he was no longer a suicide risk, and (2) the bail amount is unconstitutionally excessive because it was effectively designed to ensure his pretrial detention. This court’s review of the judgment of the single justice is “limited to correcting errors of law and abuse of discretion.” Preston v. Commonwealth, 391 Mass. 1017, 1017 (1984), citing Commesso v. Commonwealth, supra at 376. There was no abuse of discretion or error of law here. A review of the record supports the single justice’s conclusion that Leo failed to present any information to her to ensure that he would continue to follow his treatment regime if released.1 As for his claim that the bail amount is excessive because it was designed to guarantee his pretrial detention, he waived that claim by failing to raise it before the single justice. In any event, the amount of bail was not excessive merely because Leo could not post it. Cf. Querubin v. Commonwealth, 440 Mass. 108, 113-120 (2003) (judge may order defendant held without bail where no conditions of release would ensure defendant’s presence at trial). See United States v. Mantecon-Zayas, 949 F.2d 548, 550 (1st Cir. 1991); United States v. Jessup, 757 F.2d 378, 388-389 (1st Cir. 1985); Cresta v. Eisenstadt, 302 F. Supp. 399, 401 (D. Mass. 1969).2

Judgment affirmed.