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Post-wash TMSC calculator

Is my washed sample good enough for IUI?

Q: Is this the same as the TMSC on my semen analysis?

No. That is pre-wash. Preparation concentrates the motile fraction and discards the rest, so the post-wash figure is what IUI decisions actually use.

Q: My pre-wash was fine but post-wash is low. Why?

Preparation reveals how many sperm are genuinely motile and able to swim through the medium. Some samples look better on a raw count than they perform after washing.

Q: Can post-wash numbers be improved?

Sometimes. Shorter abstinence often helps motility, and treating an infection or varicocele can change the picture — allow about three months for any change to appear. Different preparation methods also yield differently, so ask your lab which they use.

The prepared-sample figure units actually use to decide whether IUI is realistic.

Post-wash volume

After preparation

Post-wash concentration

M/mL

Million per mL

Post-wash motility

Percent moving

These are example numbers. Replace them with yours, then press Calculate.

Example answer

8.0million

5–10

Around the threshold most units use. Many will proceed with IUI in this range.

This is a guide, not a diagnosis. Share the result with your doctor.

Your result on the scale

The ranges this calculator uses. Yours is highlighted.

Your numbers

Everything worked out from what you entered.

Post-wash volume: 0.5 mL
Post-wash concentration: 20 M/mL
Post-wash motility: 80 %

What each result means

Your result is highlighted. Your own clinic's advice always comes first.

Your result<1

IUI is very unlikely to be offered. IVF with ICSI is the usual route discussed at this level.

Your result1–5

Below most unit thresholds for IUI. Some will attempt it with clearly reduced expectations.

Your result5–10

Around the threshold most units use. Many will proceed with IUI in this range.

Your result10+

Comfortably above typical IUI thresholds. Other factors will determine the recommendation.

Where this fits in your journey

The usual order, from trying to conceive to pregnancy. Not everyone needs every stage. This calculator belongs to stage 2.

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This calculator: Is my washed sample good enough for IUI?

Calculators for what comes next

How this is worked out

Exact calculationArithmetic on the numbers you enter. If your inputs are right, this figure is right.

Post-wash total motile sperm count is measured after laboratory preparation and is the figure units actually use for IUI decisions. Common thresholds sit between 5 and 10 million; it is typically lower than the pre-wash count.

About this calculator

?What it tells you

The figure clinics use on IUI day. The prepared-sample figure units actually use to decide whether IUI is realistic.

✓When to use it

Before an IUI, when the unit has quoted a prepared-sample figure

iWhat you need

Post-wash volume (mL)
Post-wash concentration (M/mL)
Post-wash motility (%)

!What it cannot tell you

Thresholds are unit-specific. Ask yours what figure it uses and why.

Common questions

Is this the same as the TMSC on my semen analysis?

No. That is pre-wash. Preparation concentrates the motile fraction and discards the rest, so the post-wash figure is what IUI decisions actually use.

My pre-wash was fine but post-wash is low. Why?

Preparation reveals how many sperm are genuinely motile and able to swim through the medium. Some samples look better on a raw count than they perform after washing.

Can post-wash numbers be improved?

Sometimes. Shorter abstinence often helps motility, and treating an infection or varicocele can change the picture — allow about three months for any change to appear. Different preparation methods also yield differently, so ask your lab which they use.

Sources

Commonly cited IUI thresholds sit between 5 and 10 million post-wash TMSC, though units differ.

In an emergency

If you have any of the warning signs listed here, don't wait for a test result or a calculator. Get help now.

112All emergencies, anywhere in India 108Ambulance

Also call your IVF clinic. Most clinics give an emergency number on your treatment or discharge sheet. Save it in your phone now, before you need it.