
553 N.W.2d 619 (1996)
218 Mich. App. 27
Raphael SOUMIS, Plaintiff-Appellee,
v.
Joyce M. SOUMIS, Defendant-Appellant.
Docket No. 184498.
Court of Appeals of Michigan.
Submitted May 13, 1996, at Marquette.
Decided July 26, 1996, at 9:35 a.m.
Released for Publication September 27, 1996.
*620 Vairo, Mechlin, Tomasi, Johnson & Manchester by Jeryl A. Manchester, Houghton, for plaintiff-appellee.
Hunter H. Watson, Laurium, for defendant-appellant.
Before HOOD, P.J., and MARKMAN and DAVIS,[*] JJ.
PER CURIAM.
Defendant appeals as of right the circuit court's judgment of divorce entered on January 5, 1995. The court awarded the parties joint legal custody of their two minor children, Delina Soumis, born on February 17, 1981, and Jessie Soumis, born on December 14, 1988. It awarded plaintiff full physical custody of Delina and ordered the parties to share physical custody of Jessie, with the child to reside with each party for alternating six-month periods. We affirm.
The parties were married on November 4, 1978. Plaintiff filed for divorce on July 28, 1993. On March 14, 1994, following 2½ days of testimony, the court awarded temporary custody of the two minor children. On September 12, 1994, two days before the final hearing, defendant moved for leave to amend her pleadings and for a continuance. Defendant raised for the first time the issue of paternity with regard to Jessie. She requested that the court order plaintiff to submit blood samples for testing and that she be allowed to present evidence of a human leukocyte antigen analysis (HLA), a blood test. Following oral arguments, the court denied defendant's motion for a continuance. The court granted the motion for leave to amend because "otherwise the defendant would be precluded from presenting evidence upon which this Court might ... reconsider its ruling as to the request for continuance to obtain the blood tests."
Defendant testified that at the time of Jessie's conception, which would have occurred sometime in January through March 1988, she and plaintiff were not having sexual relations, although they were living together as husband and wife. She was sexually involved with a man named Rodney Franklin, whom she believed to be Jessie's father. She met Franklin in January 1988 and immediately became sexually involved with him. Their relationship ended in June, when she and plaintiff reconciled. Plaintiff, however, testified that defendant told him that she met Franklin when she began a new job in the latter part of March.
Although defendant claimed that she and plaintiff did not have sexual relations during the period when the conception occurred, she admitted that on at least two occasions she and plaintiff had sexual relations at a honeymoon suite at a local casino. She admitted that those days could have been in the early months of 1988.
Defendant claimed that she told plaintiff that he was not the father when she informed him of her pregnancy in April 1988, but that he had never believed her. Defendant also claimed that plaintiff admitted to third parties that he was not Jessie's father. Plaintiff stated that the trial motion was the first time since before Jessie's birth that the subject of his paternity had been mentioned.
Plaintiff testified that he believed Jessie to be his daughter and that she looked to him as a parent. Although defendant told him that the child might not be his, plaintiff believed Jessie to be his child on the basis of her birth date and the fact that she appeared to be a full-term baby. Plaintiff maintained that the parties ceased having sexual relations *621 only after defendant told him of her pregnancy and relationship with Franklin.
Defendant admitted that plaintiff was the only father that Jessie knew. The man she claimed was the child's biological father had died a year or two after Jessie was born. She claimed that she mentioned the issue of paternity because she wanted plaintiff to know that he was not Jessie's father. She realized that it could be damaging to the child to find out at this point that plaintiff was not her father.
In its opinion, the trial court stated:
[E]vidence was presented from which it could be found that notwithstanding the presumption that plaintiff is Jessie's biological father, he actually is her biological father. Furthermore ... there was more than ample evidence presented to satisfy the three part test postulated in Atkinson vs. Atkinson [160 Mich.App. 601, 408 N.W.2d 516 (1987) ] and find Mr. Soumis to be the equitable parent of Jessie. Therefore, since the presentation of the additional evidence urged by defendant would not alter this Court's finding that sufficient other credible evidence exists by which plaintiff could be found to be Jessie's biological father, reopening of the proofs would be futile. Equally futile would be the requirement that the parties submit to blood tests since even if plaintiff were found not to be Jessie's natural father he is clearly her "equitable parent" as defined by the Court in Atkinson.


* * * * * *
[T]his Court finds it absolutely abhorrent that Mrs. Soumis, who did not raise the issue [of paternity] in any of her pleadings throughout this lengthy proceeding, and who did not raise the issue during the two and one-half day hearing on the question of temporary custody, in the midst of trial, and in both a proceeding and in documents open to the public, asserted in some detail that plaintiff was not Jessie's father while identifying another, who is now deceased and cannot speak from the grave, as her biological father. This Court can think of no way in which Jessie would be benefited by her mother's allegations and disclosures but there are many ways in which she is likely to be damaged by them.... This Court concludes that Mrs. Soumis' actions, while within her right, were misguided and showed a callous disregard for Jessie's welfare.
Defendant first argues that the trial court erred in refusing to grant a continuance to allow the parties to submit to blood testing. We disagree. The ruling on a motion for a continuance is discretionary and is reviewed for an abuse of discretion. In re Jackson, 199 Mich.App. 22, 28, 501 N.W.2d 182 (1993).
"A motion for adjournment must be based on good cause, and a court, in its discretion, may grant an adjournment to promote the cause of justice." Zerillo v. Dyksterhouse, 191 Mich.App. 228, 230, 477 N.W.2d 117 (1991). Additionally, MCR 2.503(C)(1) requires that a motion for adjournment based on the unavailability of evidence "must be made as soon as possible after ascertaining the facts." In the instant case, defendant testified that she had believed from the time of Jessie's birth that plaintiff was not the child's father. She offered no plausible explanation for waiting until a few days before the final hearing to raise the issue.[1]
Furthermore, plaintiff's request was not made for good cause. Contrary to plaintiff's argument, this case is distinguishable from In re Flynn, 130 Mich.App. 740, 344 N.W.2d 352 (1983).[2] Unlike the facts in Flynn, the instant case does not involve two men who were each vying for paternity. Here, there was sufficient evidence that plaintiff was the child's biological father. Moreover, the court was presented with the choice of either leaving a firmly established paternal relationship or risking the destruction of that relationship by ordering blood tests that could leave the *622 child essentially fatherless. We therefore conclude that defendant's motion was not timely and was not made for good cause. The trial court did not abuse its discretion in denying defendant's motion.
Defendant next argues that the trial court erred in applying the equitable parent doctrine in favor of plaintiff because he knew before the child's birth that he might not be the father and there was no determination whether he is the child's biological father. We disagree. When reviewing orders of child custody, an appellate court must affirm the orders unless the findings of fact were against the great weight of the evidence, the discretionary rulings constituted an abuse of discretion, or the legal rulings constituted clear legal error. M.C.L. § 722.28; M.S.A. § 25.312(8); Hayes v. Hayes, 209 Mich.App. 385, 389, 532 N.W.2d 190 (1995).
In this case, there was sufficient evidence that plaintiff was the child's biological father. Even if a husband knows that he may not be the father of a child born during the marriage, this Court has held that where he represents himself for many years as the father of the child, he is estopped by his conduct from denying paternity. Atkinson at p. 610, 408 N.W.2d 516; Johnson v. Johnson, 93 Mich.App. 415, 419, 286 N.W.2d 886 (1979). Further, contrary to defendant's contention, there is no additional factor in the Atkinson test requiring that the husband have no knowledge of the fact that his paternity may be in question. Rather, the Atkinson test analogized the doctrine of equitable parent to that of equitable adoption. Id., at p 611, 408 N.W.2d 516. Clearly, in adoption cases, the adoptive parents know they are not the biological parents. Therefore, the established law is exactly the opposite of what defendant contends. Indeed, an individual who has been found to be an "equitable parent" under the Atkinson standards stands on equal footing with any other natural or adoptive parent.
Moreover, in most cases where a biological relationship is challenged, courts must make a determination of paternity because of the legislatively created presumption in favor of natural parents contained in M.C.L. § 722.25; M.S.A. § 25.312(5). The presumption is applied only in cases involving a custody dispute "between the parent or parents and an agency of a third person...." M.C.L. § 722.25; M.S.A. § 25.312(5). In a custody dispute between the parents, the best interests of the child shall control. M.C.L. § 722.25; M.S.A. § 25.312(5); Heid v. Aaasulewski, 209 Mich.App. 587, 595, 532 N.W.2d 205 (1995); Lombardo v. Lombardo, 202 Mich.App. 151, 159, 507 N.W.2d 788 (1993). This standard cannot be abrogated, even in fairness to the parties. Moser v. Moser, 130 Mich.App. 97, 101, 343 N.W.2d 246 (1983).
We find that the trial court properly determined that it was in the best interests of the child for plaintiff to be considered the child's father in the absence of blood test evidence. The alleged biological father has been deceased since shortly after the child's birth. Obviously, a deceased parent cannot provide support or guidance. Defendant admitted that plaintiff is the only father Jessie has ever known and the only father she would ever know. Defendant also had encouraged the parent-child relationship between plaintiff and Jessie. We therefore conclude that the trial court did not err in refusing to apply the presumption in favor of natural parents to defendant.
Defendant finally claims that the court clearly erred in refusing to order HLA blood testing because it was the best evidence available of plaintiff's nonpaternity. We disagree.
Again, the overriding concern in any custody dispute is the best interest of the child as measured by the factors set forth in M.C.L. § 722.23; M.S.A. § 25.312(3). Zuziak v. Zuziak, 169 Mich.App. 741, 750, 426 N.W.2d 761 (1988). In this case, allowing HLA evidence to be introduced cannot be in the best interest of the child, because it would only undermine her established relationship with plaintiff. Defendant admitted at trial that her only reason for introducing the evidence was so that plaintiff would know he was not Jessie's father. As the trial court stated: "To say the least, the position advanced by Mrs. Soumis at trial is not indicative of a willingness and ability on her part to encourage *623 a close and continuing parent/child relationship between Jessie and Mr. Soumis."
Additionally, under the Michigan Rules of Evidence, only relevant evidence is admissible. MRE 401, 402. The trial court determined that plaintiff was entitled to be considered Jessie's natural parent. Therefore, the blood test evidence was irrelevant and, thus, inadmissible. Even if the HLA blood test would have been relevant to the issue of paternity, it was properly excluded because its probative value was substantially outweighed by the danger of unfair prejudice. MRE 403. Because the alleged father is deceased, HLA tests establishing him to be the biological father would have left the child fatherless and her relationship with plaintiff irreparably damaged. Plaintiff is certainly a better father than one who is dead. The resulting prejudice to plaintiff's rights and harm to the child would not be outweighed by the vindication of the rights, if any, of the deceased.
Finally, defendant's reliance on Serafin v. Serafin, 401 Mich. 629, 258 N.W.2d 461 (1977), is misplaced. That case held only that "a husband and wife may testify concerning nonaccess to each other." Id., at p 634, 258 N.W.2d 461. The record clearly indicates that a substantial amount of evidence was introduced regarding the issue of access. Accordingly, the court did not contravene the holding in Serafin.
Affirmed.
MARKMAN, Judge, concurring.
I concur fully in the reasoning and conclusions of the majority opinion. However, I am concerned that its several references to the fact that the alleged biological father of Jessie Soumis is dead, and that a judgment in favor of defendant "could leave the child essentially fatherless," suggest that our decision might have been different had the alleged biological father still been alive. I do not believe that such an inference should be drawn from the majority opinion or that this is its intention. Rather, what is significant in the majority opinion is its straightforward proposition that an "equitable parent" stands on "equal footing with any other natural or adoptive parent." We affirm the decision of the trial court, not because the alleged biological father happens to be dead, but rather because plaintiff is the "equitable parent." He would be just as much the "equitable parent" if the alleged biological father were still alive and prepared to assert his fatherhood at this late juncture.
NOTES
[*]  Alton T. Davis, Jr., 46th Judicial Circuit Judge, sitting on Court of Appeals by assignment pursuant to Const. 1963, Art. 6, Sec. 23, as amended 1968.
[1]  Defendant merely claimed that she failed to raise the issue during the March custody hearing because of a "misunderstanding of the law due to a natural reluctance to discuss it with counsel and out of fear of plaintiff's response."
[2]  We note that the holding in Flynn was characterized as "unpersuasive" by the Supreme Court. See Girard v. Wagenmaker, 437 Mich. 231, 251-252, n. 7, 470 N.W.2d 372 (1991).
