Can a Uti Give a False Positive Pregnancy Test
This postal service was reviewed for medical accuracy past Rosalie Gunson, a Certified Registered Nurse Practitioner specializing in fertility care.
When you do medicated fertility cycles, you will likely take a shot to trigger ovulation. (Ovidrel is 1 common brand proper noun, but yous may be familiar with Novarel, Pregnyl, or Profasi instead.)
This injection volition make you ovulate within 24-36 hours, which makes information technology easier to fourth dimension whatever your next step is — either timed intercourse or an IUI.
But what happens when yous take a dwelling pregnancy test afterward? Can the trigger shot make it look similar y'all're meaning if you're non?
Aye, Ovidrel can cause a fake positive if it is still in your organisation when you take a home pregnancy test. That's because the shot contains hCG (man chorionic gonadotropin), the same hormone that a pregnancy test tests for.
The trigger shot can take 10-fourteen days to leave your arrangement, then the safest thing to practice is to wait at least that long before taking a domicile pregnancy test. Ideally, you'd wait until your missed period anyway.
But what if yous actually don't desire to await?
Testing Out the Trigger Shot
Some women like to "exam out the trigger" by taking several home pregnancy tests over the course of a calendar week. The first examination will be positive, but eventually the tests will be negative. If you go a positive test subsequently a negative one, you know y'all're really significant.
Personally, I hated the thought of looking at positive pregnancy tests unless it was the real matter. It felt like a cruel mind game. And let's be honest — taking that many pregnancy tests every month gets expensive.
So I never tested out the trigger. Instead, I made myself await until my missed catamenia to take a home pregnancy examination, and sometimes skipped the home exam entirely and got a blood test at my doctor's office at 14 dpo.
But if yous actually can't wait and you want to try testing out the trigger, become for it — just brand sure you know what to expect, then you don't get your hopes up for no reason.
What Else Tin can Cause a False Positive?
When it comes to home pregnancy tests, false positives are far less common than false negatives. That's because healthy women only produce hCG when we're pregnant. (Men don't produce it at all unless they have testicular cancer.)
But you can accept hCG in your system for other reasons also a viable pregnancy, including:
- Chemical pregnancy
- Ectopic pregnancy
- Recent miscarriage
- Certain diseases (try non to Google this, considering some of these conditions are serious)
And occasionally pregnancy tests requite a false reading because they're by their expiration date or just plain faulty. So if you get a positive on a home examination, definitely do a little happy trip the light fantastic, simply get a blood hCG test to confirm the results.
When you're taking a home pregnancy test that shows a positive event equally two lines, remember that the 2nd line does not have to be as dark as the first i. If you lot see a 2d line AT ALL, that'due south a BFP! For more than info, check out Pregnancy Tests: Is it a BFN if the Second Line is Faint?
Blood hCG Tests ("Betas")
If you're doing fertility handling, your fertility specialist has probably encouraged you to come in the function for a blood pregnancy test rather than mess around with peeing on a stick at domicile. That's because the blood tests provide a quantitative measure of how much hCG is in your system, while dwelling tests but provide a yes/no answer. Also, a significant woman normally has more than hCG in her blood than in her urine.
So what's a skilful beta hCG consequence? Non-meaning women generally take hCG levels under 5 mIU/mL. Many doctors desire to see an hCG level of at least 25 mIU/mL before they will consider y'all pregnant. (I once had a beta level of vii mIU/mL, which was either the trigger shot sticking around for an unusually long time or the lamest chemic pregnancy e'er.)
If your first beta effect is five mIU/mL or lower, unfortunately that'southward a definite answer. The practiced news is that you will probably get your period very presently, so you'll be starting the next round of meds earlier yous know it!
(If you don't become your period within a reasonable time frame and you aren't significant, y'all may need to take Provera to jump-start a new wheel. Check out my post How to Accept Provera When TTC for more info!)
If your first beta result indicates that you're pregnant, your dr. will want you to come back for one or two more than blood tests over the adjacent week to confirm that the levels are increasing every bit they should. Congratulations! You lot're now in Beta Hell.
Beta Hell
When you're in the Two Calendar week Wait, you think there tin't be a worse form of waiting… Until you find yourself in Beta Hell. You're finally pregnant, but yous're afraid to get excited. The hours clamber past equally you expect for the results, desperate for a high number.
You probably have at to the lowest degree a few friends who take no thought what their beta level was — the md just confirmed that they were pregnant with i blood test and that was that.
But infertility patients are usually sent for multiple tests, and the stakes experience higher. It'southward like shooting fish in a barrel to start obsessing almost each result, peculiarly if you have experienced early loss.
Like I said, a beta result over 25 mIU/mL typically indicates early on pregnancy, but the actual numbers are non every bit of import as the doubling rate.
In the early weeks of pregnancy, doctors want to see the number doubling every 48-72 hours. Betas that don't go up over several days or offset to go down betoken that the pregnancy may non exist viable.
If your commencement beta seems low, it doesn't necessarily mean anything. Even if you lot know when yous conceived (because you know the date of your IUI or IVF procedure), there's no way to know exactly when the fertilized egg implanted. It could be anywhere from 6 to 10 days after ovulation.
So a low beta number may simply hateful that you lot happened to test pretty soon afterward implantation, and the level hasn't had a chance to climb all the same.
When you go through Beta Hell, you're almost set up to leave the fertility dispensary behind. So exciting! For more than info on the next steps, see my postal service Graduating from an RE to an OB for Prenatal Care.
Beta Results and Multiples
OK, so low beta numbers don't necessarily mean bad news (every bit long as they're increasing accordingly). What about loftier numbers? Do high initial beta numbers betoken that y'all are carrying twins or triplets?
I wish I could requite you a definite respond, but information technology depends. Lots of women have loftier start beta numbers and just one baby, while some moms of multiples had relatively low beta results.
The number is just a measure of how much HCG is in your system, and significant women produce unlike amounts. The normal range is very wide. (Don't believe me? Check out the website betabase.)
So if y'all doubtable yous may exist pregnant with more than ane babe, you lot'll accept to look until your first ultrasound to find out. Bold that you are doing all the testing equally soon as possible, you'll probably have your showtime ultrasound a few weeks after you last claret pregnancy test. At that betoken, y'all volition be considered 6-7 weeks meaning.
(Virtually likely you'll be all likewise familiar with internal ultrasounds by this indicate, merely in case you lot got lucky and conceived rapidly, check out my post Practice Transvaginal Ultrasounds Injure? for more than info on what to wait.)
In my case, I was meaning with twins and my beta numbers were on the high side. Y'all can imagine my reaction when I got the result of the get-go beta from that cycle (at xiii dpo) and it was 268. (That definitely beat the pants off the 7 from the previous cycle!)
Two days subsequently, it was 689. A week after that, it was all the way up to 14,898. I had officially fabricated it through Beta Hell.
For more information nigh the risk of conceiving multiples on fertility medications, head over to my postal service Will Clomid Make Y'all Have Twins?
Is There a Chance the Trigger Shot Didn't Piece of work?
All of this assumes that Ovidrel worked as it was supposed to, and y'all ovulated "on time." Since women answer differently to dissimilar medications, you may wonder (as you're sitting in the dreaded Two Week Wait, symptom spotting and anxiously Googling various scenarios) if there'due south a chance that the trigger shot failed to do its job.
Yep, there'due south a chance — but it's very slim. The vast bulk of women do respond to Ovidrel and ovulate inside the window. If there's doubt, your doctor may order a progesterone test to verify that y'all did in fact ovulate.
The Bottom Line
Going back to the original question, yes, your Ovidrel shot could give you a false positive on a home pregnancy exam if you take it also before long.
I know the terminal few days of the Two Week Wait are awful, merely if yous expect until your catamenia is late, you lot'll have a lot more confidence that that positive outcome is the real thing. Good luck!
This post was terminal updated in May 2020.
Source: https://www.fertilityharbor.com/ovidrel-false-positive/
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