***UPDATED CLEANED UP DEAD LINK UPDATED INFO

Wanted to make the community aware that if your using NPP or DECA (NANDROLONE) it will cause a false reading (HIGH) in Serum Testosterone blood testing done in ECLIA. There is interference and a cross reaction from the Nandrolone. It reads the NPP or DECA you’re taking as Testosterone and will give a crazy false high reading.(Higher spike with NPP) To avoid this when every your running NPP or Deca get your testosterone serum tested in LC/MS OR LC/MSMS. Both privatemdlabs and labsmd offer this type testing. Both offer other testosterone tests iwith different combinations such as lipids,prolactin,etc.
To be honest if your running anything that elevates T levels spend the extra $15 (with the 15% discount) to run LC/MSMS to get a true uncapped (showing more than 1500) testosterone number. With all the interference I've been seeing lately it's the only way to get a true number.
https://www.privatemdlabs.com/lab_tests.php?view=all&show=2572&category=...
https://www.labsmd.com/tests.php?view=all&show=2234&category=14&search=#...

This is an update #2 on the false high estrogen reading while on Tren and estradiol or total estrogens tested in ECLIA. the way to avoid this is get estradiol in LC/MS or LC/MSMS. Back 4-5 yrs ago when i first reported on this it was hard to find and when you did it was expensive. what you want is estradiol sensative9labCorp) or Estradiol Ultrasensitive. The test to order linked below.
https://www.privatemdlabs.com/lab_tests.php?view=all&show=2573&category=...
https://www.labsmd.com/tests.php?view=all&show=2451&category=14&search=#...

Do not test estradiol in RIA or RIA DIRECT as it will give you a false reading. If the lab your using (this happened with Quest) tests estradiol in RIA then make sure they use EXTRACTION RIA this test reads correctly. One member got a test as instructed from Quest but the DR ordered RIA Quest Test #439. What should of been ordered is 439X which is the extraction method. So he had a false high reading. So be careful when ordering. When in doubt call labsmd to make sure the right test is being performed or if going through your Dr tell him you want EXTRACTION RIA. The estradiol testing methods that read correctly are done in IA, EXTRACTION RIA and LC/MSMS.

Page 7 of FDA approval showing Nandrolone has cross reaction on Roche ECLIA reads high testosterone.

Nandrolone was tested and was considered as interference substance;therefore, the sponsor has the following limitations in the labeling:“Do not use samples from patients under Nandrolone treatment”

Page 11 and 12
http://www.accessdata.fda.gov/cdrh_docs/pdf12/k120009.pdf

• • These compounds tested above the measuring interval and the % Cross-reactivity could not be
    calculated.

Blood test showing false high in testosterone OP was using NPP. The other thing you will notice is that he had elevated estrogen levels from low 100 on 17,000 test level (false reading). If you have a blood test showing super elevated testosterone levels while on NPP or Deca post a link to it in the comment section trying to get a fix on how common this is and what testing method this is happening in. I know it happens in ECLIA but does it happen with other methods of testing.
http://www.eroids.com/pics/mid-cycle-bloods-week-6

Blood test while on tren A and Prop OP got total estrogen in IA from labsmd reads correctly
http://www.eroids.com/pics/test-prop-blood-work?page=1