Hormones

Somatostatin unit converter

Somatostatin in plasma (somatostatinoma work-up)

Also known as: SST, Somatotropin release-inhibiting hormone

Converter

Enter a value in any unit and all other units fill in.

pmol/L pg/mL nmol/L µg/L ng/dL

Worked example

75 pmol/L (middle of the reference range) = 123 pg/mL

Conversion formulas

pg/mL	pg/mL = pmol/L × 1.638	pmol/L = pg/mL × 0.6105
nmol/L	nmol/L = pmol/L × 0.001	pmol/L = nmol/L × 1000
µg/L	µg/L = pmol/L × 0.001638	pmol/L = µg/L × 610.5
ng/dL	ng/dL = pmol/L × 0.1638	pmol/L = ng/dL × 6.105

Good to know

Somatostatin in plasma is reported in pmol/L or in pg/mL.

pg/mL × 0.6105 = pmol/L (exact factor 0.6105).
The hormone breaks down quickly, so the sample has to be cooled and frozen at once.

Reference range

Unit	Adults
pmol/L	0 – 150
pg/mL	0 – 245.7
nmol/L	0 – 0.15
µg/L	0 – 0.2457
ng/dL	0 – 24.57

Source: Newcastle Hospitals Laboratories: Somatostatin · Last reviewed: 2026-10-19

Note from the source: Below 150 pmol/L (about 245 pg/mL) (Newcastle Hospitals Laboratories, referral to the SAS laboratories). The sample must be frozen quickly

Frequently asked questions

How do I convert Somatostatin from pmol/L to pg/mL?

pg/mL = pmol/L × 1.638. In the other direction: pmol/L = pg/mL × 0.6105.

What is the reference range of Somatostatin?

For adults the range is 0 – 150 pmol/L (Newcastle Hospitals Laboratories: Somatostatin). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Somatostatin?

Common units are pmol/L, pg/mL, nmol/L, µg/L, ng/dL.