CTX unit converter
Convert CTX between pg/mL and ng/mL. Type in either box. The factors come from our catalog and are checked by code.
AI-verified against cited sources. Awaiting expert reviewLast reviewed 2026-10-03
1 pg/mL = 0.001 ng/mL. Nothing you type here leaves your browser.
The conversion
- 1 pg/mL = 0.001 ng/mLFrom pg/mL to ng/mL: divide by 1,000. Back again: multiply by 1,000.
pg/mL and ng/L give the same number. ng/mL and µg/L give the same number.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| pg/mLsame as ng/L | ng/mLsame as µg/L |
|---|---|
| 118 | 0.118 |
| 132 | 0.132 |
| 161 | 0.161 |
| 182 | 0.182 |
| 225 | 0.225 |
| 238 | 0.238 |
| 250 | 0.25 |
| 500 | 0.5 |
| 737 | 0.737 |
| 750 | 0.75 |
| 752 | 0.752 |
| 776 | 0.776 |
| 801 | 0.801 |
| 936 | 0.936 |
| 1,000 | 1 |
| 1,019 | 1.019 |
| 1,250 | 1.25 |
| 1,500 | 1.5 |
| 1,750 | 1.75 |
| 2,000 | 2 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the CTX page.
| Who | pg/mL | ng/mL |
|---|---|---|
| Women, 18+, premenopausal | 136–689 | 0.136–0.689 |
| Women, 18+, postmenopausal | 177–1,015 | 0.177–1.015 |
| Men, 18–29 | 238–1,019 | 0.238–1.019 |
| Men, 30–39 | 225–936 | 0.225–0.936 |
| Men, 40–49 | 182–801 | 0.182–0.801 |
| Men, 50–59 | 161–737 | 0.161–0.737 |
| Men, 60–69 | 132–752 | 0.132–0.752 |
| Men, 70+ | 118–776 | 0.118–0.776 |
| Women, 0.5–6 | 500–1,800 | 0.5–1.8 |
| Men, 0.5–6 | 500–1,700 | 0.5–1.7 |
| Women, 7–9 | 566–1,690 | 0.566–1.69 |
| Men, 7–9 | 522–1,682 | 0.522–1.682 |
| Women, 10–12 | 503–2,077 | 0.503–2.077 |
| Men, 10–12 | 553–2,071 | 0.553–2.071 |
| Women, 13–15 | 160–1,590 | 0.16–1.59 |
| Men, 13–15 | 485–2,468 | 0.485–2.468 |
| Women, 16–17 | 167–933 | 0.167–0.933 |
| Men, 16–17 | 276–1,546 | 0.276–1.546 |