Upon completion of the search in which the birth mother agrees to be contacted, the intermediary usually sends the adoptee the official unamended birth certificate obtained from the court. The adoptive parents' application to an adoption agency remains confidential, however. The cost for a confidential intermediary and related court fees can be around $500, but varies by state and agency. For persons who cannot afford the fees, there is usually assistance available from the tax-payer supported state department or the non-profit agency, and anyone can request from them how-to request this help. Most agencies charge a fixed fee which includes everything, and only in the most extreme and unusual circumstances ask for additional funds. If the adoptee is unable to locate (or would prefer to use a third person) to find his or her birth father, often the same confidential intermediary can be used for an additional fee. There are also private search companies and investigators who charge fees to do a search for or assist adoptees and birth mothers and fathers locate each other, as well as to help other types of people searching. These services typically cost much more, but like search organizations and search angels, have far greater flexibility in regards to releasing information, and typically provide their own intermediary services. However, they may not circumvent the law regarding the confidentiality process. In all adoption searches, it is uncommon to find both the birth mother and father at the same time. A separate search, if desired, can be done afterwards for the father. Since males seldom change their surnames, and the mother might have additional information, it is usually easier than the initial search for the birth mother. In many cases, adoptees are able to do this second search for their birth father by themselves (or they try before paying for assistance). Females have statistically been somewhat more likely than males to search for their birth parents, and are far more likely to search for their adopted children. Very often, the reason the infant was put up for adoption in the first place was the birth father's unwillingness to marry or otherwise care for the child. Nevertheless, many birth fathers in this situation have agreed to meet with their grown children decades later. In recent years, DNA tests designed for genealogists have been used by adult adoptees to identify biological relatives. Legal matters Only a court order