DNA Fingerprint tries to be compatible to the NIST and ISFG recommendations. However, this isn't always conclusive and other laboratories sometimes interpret the same guidelines in a different way.

The following table lists the arithmetic operation that must be carried out to convert a result from a foreign laboratory to the standard that we use in our results and in our database.

Marker	RG & DNAH	SMGF	FTDNA	OA	Comment
DYS19	=	- 1	=	=	SMGF uses DYS394; Conversion as indicated on their website
DYS385	=	=	=	=	DNA-FP doesn't use 'a' and 'b' tags for unsorted alleles
DYS385a* (Kittler)	= / ?	= / ?	=	?	Compatible in length to DYS385
DYS385b* (Kittler)	= / ?	= / ?	=	?	Compatible in length to DYS385
DYS388	=	=	=	=
DYS389I	=	=	=	+3
DYS389II	=	= / +DYS389I	=	+DYS389I	OA and SMGF use DYS389ii-i = DYS389II - DYS389I
DYS389III	?	?	=	?	Not used by DNA-FP, yet
DYS390	=	=	=	=
DYS391	=	=	=	=
DYS392	=	=	=	=
DYS393	=	=	=	=
DYS413	?	?	=	?
DYS425	?	?	=	=	Compatible to DYF371 T-type
DYS426	=	=	=	=
DYS434	?	?	=	?	-2 compared to [1]
DYS435	?	?	=	?
DYS436	?	=	=	?
DYS437	=	=	=	?
DYS438	=	=	=	?
DYS439	=	=	=	?
DYS441	=	=	=	?
DYS442	=	=	=	?
DYS444	=	=	=	?
DYS445	=	=	=	?
DYS446	=	=	=	?
DYS447	=	=	=	?
DYS448	=	-3	=	?
DYS449	=	=	=	?
DYS452	+ 19	=	=	?
DYS454	=	=	=	?
DYS455	=	=	=	?
DYS456	=	=	=	?
DYS458	=	=	=	?
DYS459	=	=	=	?	DNA-FP doesn't use 'a' and 'b' tags for unsorted alleles
DYS460	=	=	=	?
DYS461	=	+1	=	?
DYS462	=	=	=	?
DYS463	+ 2	=	=	?
DYS464	=	?	=	?	DNA-FP doesn't use 'a','b','c'... tags for unsorted alleles
DYS464X	= / ?	?	=	?	Compatible in length to DYS464
DYS570	?	?	=	?
DYS576	?	?	=	?
DYS607	?	?	=	?
DYS635	=	=	=	?	Identical to Y-GATA-C4
DYS724	?	?	=	?	Identical to CDY; DNA-FP doesn't use 'a','b','c'... tags for unsorted alleles
DYS725	?	?	=	?
YCAII	=	=	=	?
Y-GATA-A10	=	=	=	?
Y-GATA-H4	=	=	+ 1	?
Y-GGAAT-1B07	=	=	=	?
DYF371X	= / ?	?	=	= / ?	Only the DYF371X T-type is equivalent to DYS425
DYF385	?	?	=	?	DYF385 is NOT the same as DYS385 !
DYF399	?	?	=	?	DNA-FP uses short nomenclature. See DYF399
DYF401	?	?	=	?	Identical to DYS527
DYF408	?	?	=	?	Allele 188 stands for a 188 bp PCR product that doesn't include short tandem repeats

Abbreviations:
+ / - means add / substract following value.
? means that the laboratory or reseller doesn't test this marker or no information is available.
= means that the allele counts are compatible without an arithmetic conversion.
FTDNA -> Family Tree DNA and their Ysearch database.
RG -> Relative Genetics
DNAH -> DNA Heritage including their Ybase database.
SMGF -> Sorenson Molecular Genealogy Foundation database.
OA -> Oxford Ancestors and their yline database

[1] DYS434 differs by 2 repeat counts in the University of Leicester UK surnames project by Turi King. Participants of this study must substract two units from their report.